BIT Mining Limited (BTCM) 20-F 27 Apr 18 2017 FY Annual report (foreign) Financial data

Document And Entity Information

Document And Entity Information	12 Months Ended
	Dec. 31, 2017shares
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Entity Registrant Name	500.com Ltd
Entity Central Index Key	1,517,496
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Trading Symbol	WBAI
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	333,787,552
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	74,400,299

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS ¥ in Thousands, $ in Thousands	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)
Current assets:
Cash and cash equivalents	¥ 529,124	$ 81,325	¥ 673,102
Restricted cash	1,238	190	3,704
Time deposits	0	0	804,692
Short-term investments	120,000	18,444	100,000
Prepayments and other receivables	74,049	11,379	125,534
Other current assets	12,611	1,938	0
Total current assets	737,022	113,276	1,707,032
Non-current assets:
Property and equipment, net	106,991	16,444	53,935
Intangible assets, net	291,086	44,739	61,547
Goodwill	260,366	40,018	160,438
Deposits	5,764	886	5,810
Long-term investments	347,073	53,344	85,459
Other non-current assets	6,257	962	2,671
Total non-current assets	1,017,537	156,393	369,860
TOTAL ASSETS	1,754,559	269,669	2,076,892
Current liabilities:
Accrued payroll and welfare payable (including accrued payroll and welfare payable of the consolidated VIEs without recourse to 500.com Limited of RMB15,846 and RMB14,703 (US$2,260) as of December 31, 2016 and 2017, respectively)	16,683	2,564	16,270
Accrued expenses and other current liabilities (including accrued expenses and other current liabilities of the consolidated VIEs without recourse to 500.com Limited of RMB67,166 and RMB57,761 (US$8,878) as of December 31, 2016 and 2017, respectively)	152,337	23,414	184,155
Income tax payable (including income tax payable of the consolidated VIEs without recourse to 500.com Limited of RMB8,897 and RMB5,310 (US$816) as of December 31, 2016 and 2017, respectively)	6,917	1,063	9,050
Total current liabilities	175,937	27,041	209,475
Non-current liabilities:
Long-term payables (including long-term payables of the consolidated VIEs without recourse to 500.com Limited of RMB42,705 and RMB 27,673 (US$4,253) as of December 31, 2016 and 2017, respectively)	27,785	4,270	44,472
Deferred tax liabilities (including deferred tax liabilities of the consolidated VIEs without recourse to 500.com Limited of RMB 14,902 and RMB 12,721(US$1,955) as of December 31, 2016 and 2017, respectively)	19,475	2,993	14,902
Total non-current liabilities	47,260	7,263	59,374
TOTAL LIABILITIES	223,197	34,304	268,849
Commitments and contingencies
Redeemable noncontrolling interest	22,052	3,389	0
Shareholders’ equity:
Additional paid-in capital	2,295,111	352,753	2,198,385
Treasury shares	(143,780)	(22,099)	(123,258)
Accumulated other comprehensive income	116,051	17,837	172,589
Accumulated deficit and statutory reserve	(857,751)	(131,834)	(538,328)
Total 500.com Limited shareholders’ equity	1,409,774	216,678	1,709,531
Noncontrolling interests	99,536	15,298	98,512
Total shareholders' equity	1,509,310	231,976	1,808,043
TOTAL LIABILITIES, NONCONTROLLING INTERESTS AND SHAREHOLDERS’ EQUITY	1,754,559	269,669	2,076,892
Common Class A [Member]
Shareholders’ equity:
Ordinary shares, value	115	17	115
Common Class B [Member]
Shareholders’ equity:
Ordinary shares, value	¥ 28	$ 4	¥ 28

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) ¥ in Thousands, $ in Thousands	Dec. 31, 2017CNY (¥)shares	Dec. 31, 2017USD ($)$ / sharesshares	Dec. 31, 2016CNY (¥)shares	Dec. 31, 2016$ / shares	Dec. 31, 2015$ / sharesshares	Dec. 31, 2014$ / sharesshares	Dec. 31, 2013shares
Accrued payroll and welfare payable (including accrued payroll and welfare payable of the consolidated VIEs without recourse to 500.com Limited of RMB15,846 and RMB14,703 (US$2,260) as of December 31, 2016 and 2017, respectively)	¥ 16,683	$ 2,564	¥ 16,270
Accrued expenses and other current liabilities (including accrued expenses and other current liabilities of the consolidated VIEs without recourse to 500.com Limited of RMB67,166 and RMB57,761 (US$8,878) as of December 31, 2016 and 2017, respectively)	152,337	23,414	184,155
Income tax payable (including income tax payable of the consolidated VIEs without recourse to 500.com Limited of RMB8,897 and RMB5,310 (US$816) as of December 31, 2016 and 2017, respectively)	6,917	1,063	9,050
Long-term payables (including long-term payables of the consolidated VIEs without recourse to 500.com Limited of RMB42,705 and RMB 27,673 (US$4,253) as of December 31, 2016 and 2017, respectively)	27,785	4,270	44,472
Deferred tax liabilities (including deferred tax liabilities of the consolidated VIEs without recourse to 500.com Limited of RMB 14,902 and RMB 12,721(US$1,955) as of December 31, 2016 and 2017, respectively)	¥ 19,475	$ 2,993	¥ 14,902
Ordinary shares, shares authorized	1,000,000,000	1,000,000,000
Class A Ordinary shares [Member]
Ordinary shares, par value | $ / shares		$ 0.00005		$ 0.00005	$ 0.00005	$ 0.00005
Ordinary shares, shares authorized	700,000,000	700,000,000	700,000,000
Ordinary shares, shares issued	333,787,552	333,787,552	335,494,792		334,034,932	254,844,582	66,539,000
Ordinary shares, shares outstanding	333,787,552	333,787,552	335,494,792
Class B Ordinary shares [Member]
Ordinary shares, par value | $ / shares		$ 0.00005		$ 0.00005
Ordinary shares, shares authorized	300,000,000	300,000,000	300,000,000
Ordinary shares, shares issued	74,400,299	74,400,299	74,400,299		84,999,159	96,634,529	262,197,451
Ordinary shares, shares outstanding	74,400,299	74,400,299	74,400,299
Variable Interest Entity, Primary Beneficiary [Member]
Accrued payroll and welfare payable (including accrued payroll and welfare payable of the consolidated VIEs without recourse to 500.com Limited of RMB15,846 and RMB14,703 (US$2,260) as of December 31, 2016 and 2017, respectively)	¥ 14,703	$ 2,260	¥ 15,846
Accrued expenses and other current liabilities (including accrued expenses and other current liabilities of the consolidated VIEs without recourse to 500.com Limited of RMB67,166 and RMB57,761 (US$8,878) as of December 31, 2016 and 2017, respectively)	57,761	8,878	67,166
Income tax payable (including income tax payable of the consolidated VIEs without recourse to 500.com Limited of RMB8,897 and RMB5,310 (US$816) as of December 31, 2016 and 2017, respectively)	5,310	816	8,897
Long-term payables (including long-term payables of the consolidated VIEs without recourse to 500.com Limited of RMB42,705 and RMB 27,673 (US$4,253) as of December 31, 2016 and 2017, respectively)	27,673	4,253	42,705
Deferred tax liabilities (including deferred tax liabilities of the consolidated VIEs without recourse to 500.com Limited of RMB 14,902 and RMB 12,721(US$1,955) as of December 31, 2016 and 2017, respectively)	¥ 12,721	$ 1,955	¥ 14,902

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)¥ / sharesshares	Dec. 31, 2017USD ($)$ / sharesshares	Dec. 31, 2016CNY (¥)¥ / sharesshares	Dec. 31, 2015CNY (¥)¥ / sharesshares
Net Revenues	¥ 131,323	$ 20,184	¥ 10,928	¥ 99,552
Operating costs and expenses:
Cost of services	(53,096)	(8,161)	(14,141)	(24,355)
Sales and marketing	(76,977)	(11,831)	(44,921)	(87,022)
General and administrative	(257,079)	(39,512)	(247,688)	(232,244)
Service development expenses	(68,341)	(10,504)	(71,595)	(63,296)
Total operating expenses	(455,493)	(70,008)	(378,345)	(406,917)
Other operating income	1,204	185	2,732	6,910
Government grant	6,789	1,043	10,017	2,022
Indemnity cost	0	0	(9,979)	0
Other operating expenses	(34,691)	(5,332)	(1,915)	(2,975)
Operating loss	(350,868)	(53,928)	(366,562)	(301,408)
Others, net	821	126	0	0
Interest income	20,574	3,162	23,859	20,589
Interest expense	0	0	0	(2,138)
Loss from equity method investments	(2,128)	(327)	(406)	(407)
Gain from disposal of subsidiaries	5,477	842	136,914	0
Changes in fair value of the structured deposits	0	0	0	1,124
Changes in fair value of contingent considerations	(2,384)	(366)	0	0
Loss before income tax	(328,508)	(50,491)	(206,195)	(282,240)
Income tax (expense) benefit	12,366	1,901	(3,057)	(41,969)
Net loss	(316,142)	(48,590)	(209,252)	(324,209)
Less: Net (loss) income attributable to the noncontrolling interests	957	147	(6,287)	(312)
Net loss attributable to 500.com Limited	(317,099)	(48,737)	(202,965)	(323,897)
Other comprehensive income (loss):
Foreign currency translation gain (loss)	(55,805)	(8,577)	82,347	66,851
Realized and unrealized gain (loss) on available for sale investments	(733)	(113)	754	0
Other comprehensive income (loss) net of tax	(56,538)	(8,690)	83,101	66,851
Comprehensive loss	(372,680)	(57,280)	(126,151)	(257,358)
Less: Comprehensive (loss) income attributable to noncontrolling interests	1,348	207	(6,287)	(312)
Comprehensive loss attributable to 500.com Limited	¥ (374,028)	$ (57,487)	¥ (119,864)	¥ (257,046)
Earnings (losses) per share for Class A and Class B ordinary shares outstanding:
Basic | (per share)	¥ (0.78)	$ (0.12)	¥ (0.49)	¥ (0.84)
Diluted | (per share)	(0.78)	(0.12)	(0.49)	(0.84)
Losses per American Depositary Share (“ADS”) (1 ADS represents 10 Class A ordinary shares)
Basic | (per share)	(7.77)	(1.2)	(4.89)	(8.4)
Diluted | (per share)	¥ (7.77)	$ (1.2)	¥ (4.89)	¥ (8.4)
Weighted average number of Class A and Class B ordinary shares outstanding:
Basic	408,310,122	408,310,122	414,872,756	385,590,213
Diluted	408,310,122	408,310,122	414,872,756	385,590,213

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)
Cash flow from operating activities
Net loss	¥ (316,142)	$ (48,590)	¥ (209,252)	¥ (324,209)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation of property and equipment	13,400	2,060	12,865	10,209
Amortization of intangible assets	26,102	4,012	6,846	1,361
Deferred tax (benefit) expense	405	62	(496)	40,079
Share-based compensation	91,143	14,008	163,341	158,628
Losses on disposal of property and equipment	171	26	15	228
Impairment loss on long-term investments	28,781	4,424	3,440	5,000
Provision for bad debt	1,500	231	200	19,848
Changes in fair value of the structured deposit	0	0	0	(1,124)
Loss from equity method investments	2,128	327	406	407
Reimbursement of American Depositary Receipt (“ADR”) program related expenses	0	0	(1,390)	0
Gain on disposal of subsidiaries	(5,477)	(842)	(136,914)	0
Accumulated deficit brought forward from acquired VIE	(2,324)	(357)	0	(96)
Changes in operating assets and liabilities:
Account payable	0	0	18	0
Accounts receivable	0	0	(4,360)	51,062
Prepayments and other current assets	(32,208)	(4,950)	(4,347)	137,652
Deposits	46	7	(4,759)	8,854
Accrued expenses and other current liabilities	11,619	1,785	55,359	(43,114)
Accrued payroll and welfare payable	413	63	1,807	(15,896)
Long-term payables	(19,623)	(3,016)	(2,456)	2,734
Income tax payable	(2,133)	(328)	5,336	(9,248)
Net cash provided by (used in) operating activities	(202,199)	(31,078)	(114,341)	42,375
Cash flows from investing activities
Acquisition of property and equipment	(72,892)	(11,203)	(26,888)	(10,214)
Acquisition of intangible assets	(2,142)	(329)	0	(885)
Cash received from disposal of subsidiary	71,820	11,038	224,392	0
Acquisition of other non-current assets	(302,317)	(46,465)	(28,385)	(58,487)
Restricted cash	0	0	6,895	2,070
Cash paid for business combination, net of cash	(374,342)	(57,535)	(6,671)	(93,201)
Cash paid for short-term investments	(20,000)	(3,074)	(213,460)	(44,416)
Cash paid for time deposits	0	0	(938,928)	(2,077,901)
Cash received from return of time deposits	804,692	123,679	1,386,854	1,290,692
Cash received from return of short-term investments	0	0	100,000	70,182
Proceeds from disposal of property and equipment	3,536	543	24	97
Net cash (used in) provided by investing activities	108,355	16,654	503,833	(922,063)
Cash flows from financing activities
Proceeds from short-term bank borrowings	0	0	0	174,000
Repayment of short-term bank borrowings	0	0	0	(174,000)
Cash received from release of restricted cash	2,466	379	0	190,839
Cash paid for restricted cash	0	0	0	(190,839)
Proceeds from the exercise of share options	5,583	858	12,558	18,126
Proceeds from the private placement	0	0	0	739,108
Repurchase of ordinary shares	(17,283)	(2,656)	(131,042)	(8,773)
Reimbursement of ADR program related expenses	0	0	1,390	0
Net cash provided by (used in) financing activities	(9,234)	(1,419)	(117,094)	748,461
Effect of exchange rate changes on cash and cash equivalents	(40,900)	(6,286)	47	46,328
Net (decrease) increase in cash and cash equivalents	(143,978)	(22,129)	272,445	(84,899)
Cash and cash equivalents at beginning of the year	673,102	103,454	400,657	485,556
Cash and cash equivalents at end of the year	529,124	81,325	673,102	400,657
Supplemental disclosures of cash flow information:
Income tax paid	(8,931)	(1,373)	(51)	(9,439)
Interest received	¥ 19,416	$ 2,984	¥ 18,977	¥ 15,400

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY ¥ in Thousands, $ in Thousands	CNY (¥)shares	USD ($)shares	Ordinary shares [Member]CNY (¥)	Ordinary shares [Member]USD ($)	Additional paid-in capital [Member]CNY (¥)	Additional paid-in capital [Member]USD ($)	Treasury shares [Member]CNY (¥)	Treasury shares [Member]USD ($)	Accumulated other comprehensive income (loss) [Member]CNY (¥)	Accumulated other comprehensive income (loss) [Member]USD ($)	Accumulated deficit [Member]CNY (¥)	Accumulated deficit [Member]USD ($)	Noncontrolling interests [Member]CNY (¥)	Noncontrolling interests [Member]USD ($)	Class A Ordinary shares [Member]Ordinary shares [Member]shares	Class B Ordinary shares [Member]Ordinary shares [Member]shares
Balance at Dec. 31, 2014	¥ 1,117,622		¥ 121		¥ 1,106,234		¥ 0		¥ 22,637		¥ (11,370)		¥ 0
Balance, shares at Dec. 31, 2014 | shares															254,844,582	96,634,529
Acquisition of VIE	(96)		0		0		0		0		(96)		0
Acquisition of shares of consolidated subsidiaries	98,785		0		0		0		0		0		98,785
Net (loss) income for the year	(324,209)		0		0		0		0		(323,897)		(312)
Other comprehensive income
Foreign currency translation gain	66,851		0		0		0		66,851		0		0
Change in fair value of available for sale investments	0
Conversion of Class B to Class A ordinary shares	0		0		0		0		0		0		0
Conversion of Class B to Class A ordinary shares, shares | shares															11,635,370	(11,635,370)
Issuance of ordinary shares from private placement	739,109		20		739,089		0		0		0		0
Issuance of ordinary shares from private placement, shares | shares															63,500,500	0
Issuance of ordinary shares from exercise of share options	¥ 18,419		1		18,418		0		0		0		0
Issuance of ordinary shares from exercise of share options, shares | shares	5,274,480	5,274,480													5,274,480	0
Repurchase of ordinary shares	¥ (8,773)		0		0		(8,773)		0		0		0
Repurchase of ordinary shares, shares | shares															(1,220,000)	0
Share-based compensation	158,628		0		158,628		0		0		0		0
Balance at Dec. 31, 2015	1,866,336		142		2,022,369		(8,773)		89,488		(335,363)		98,473
Balance, shares at Dec. 31, 2015 | shares															334,034,932	84,999,159
Acquisition of shares of consolidated subsidiaries	98,887		0		0		0		0		0		98,887
Net (loss) income for the year	(209,252)		0		0		0		0		(202,965)		(6,287)
Other comprehensive income
Foreign currency translation gain	82,347		0		0		0		82,347		0		0
Change in fair value of available for sale investments	754		0		0		0		754		0		0
Conversion of Class B to Class A ordinary shares	0		0		0		0		0		0		0
Conversion of Class B to Class A ordinary shares, shares | shares															10,598,860	(10,598,860)
Issuance of ordinary shares from exercise of share options	¥ 12,676		1		12,675		0		0		0		0
Issuance of ordinary shares from exercise of share options, shares | shares	2,276,320	2,276,320													2,276,320	0
Disposal of shares of consolidated subsidiaries	¥ (92,561)		0		0		0		0		0		(92,561)
Repurchase of ordinary shares	(114,485)		0		0		(114,485)		0		0		0
Repurchase of ordinary shares, shares | shares															(11,415,320)	0
Share-based compensation	163,341		0		163,341		0		0		0		0
Balance at Dec. 31, 2016	1,808,043		143		2,198,385		(123,258)		172,589		(538,328)		98,512
Balance, shares at Dec. 31, 2016 | shares															335,494,792	74,400,299
Disposal of VIE	(2,257)		0		0		0		0		(2,324)		67
Acquisition of shares of consolidated subsidiaries	0		0		0		0		0		0		0
Net (loss) income for the year	(316,142)	$ (48,590)	0		0		0		0		(317,099)		957
Other comprehensive income
Foreign currency translation gain	(55,805)	(8,577)	0		0		0		(55,805)		0		0
Change in fair value of available for sale investments	(733)	$ (113)	0		0		0		(733)		0		0
Issuance of ordinary shares from exercise of share options	¥ 5,583		0		5,583		0		0		0		0
Issuance of ordinary shares from exercise of share options, shares | shares	894,760	894,760													894,760	0
Repurchase of ordinary shares	¥ (20,522)		0		0		(20,522)		0		0		0
Repurchase of ordinary shares, shares | shares															(2,602,000)	0
Share-based compensation	91,143		0		91,143		0		0		0		0
Balance at Dec. 31, 2017	¥ 1,509,310	$ 231,976	¥ 143	$ 21	¥ 2,295,111	$ 352,753	¥ (143,780)	$ (22,099)	¥ 116,051	$ 17,837	¥ (857,751)	$ (131,834)	¥ 99,536	$ 15,298
Balance, shares at Dec. 31, 2017 | shares															333,787,552	74,400,299

ORGANIZATION

ORGANIZATION	12 Months Ended
	Dec. 31, 2017
ORGANIZATION [Abstract]
ORGANIZATION	1. ORGANIZATION 500.com Limited (the “Company”) was incorporated under the laws of the Cayman Islands on April 20, 2007 under the original name of “Fine Success Limited”, which was changed to “500wan.com” on May 9, 2011 and further changed to the current name on October 9, 2013. As of December 31, 2017, the Company has subsidiaries incorporated in countries and jurisdictions including the People’s Republic of China (“PRC”), British Virgin Islands, Hong Kong, the United States of America (“USA”), United Kingdom of British (“UK”), Malta, Cyprus, Curacao, Australia and Japan and the Company also effectively controls a number of variable interest entities (“VIEs”), through the Primary Beneficiaries, as defined below. The accompanying consolidated financial statements include the financial statements of the Company, its subsidiaries, VIEs and VIEs’ subsidiaries. The Company does not conduct any substantive operations on its own but instead conducts its business operations through its wholly-owned and majority-owned subsidiaries and their respective VIEs or subsidiaries. As of December 31, 2017, the Company’s major subsidiaries, VIEs and VIEs’ subsidiaries are listed below: Entity Date of Place of Percentage Principal Subsidiaries Fine Brand Limited (“BVI”) February 9, 2011 British Virgin Islands 100 % Investment Holding 500wan HK Limited (“500wan HK”) March 8, 2011 Hong Kong 100 % Investment Holding 500.com USA Corporation (“500.com USA”) July 21, 2014 USA 100 % Investment Holding 500.com Gaming UK Limited (“500.com UK”) August 5, 2016 UK 100 % Investment Holding E-Sun Sky Computer (Shenzhen) Co., Ltd. (“E-Sun Sky Computer”) June 18, 2007 PRC 100 % Software Service Shenzhen Guangyi Network Technology Co., Ltd. (“Guangyi Network”) August 5, 2015 PRC 100 % Software Service Qufan Internet Technology Inc. (“Qufan Cayman”) September 30, 2016 Cayman 51 % Investment Holding Qufan Internet Technology (HK) Limited (“Qufan HK”)******** October 18, 2016 Hong Kong 51 % Investment Holding Qufan Internet Technology (Malta) Limited (“Qufan Malta”)******** August 4, 2017 Malta 51 % Online Gaming Service Qufan Information Technology (Shenzhen) Co., Ltd (“Qufan Information Technology”)******** January 5, 2017 PRC 51 % Software Service 500.com Nihon Co.,Ltd. (“500.com JP”) July 27, 2017 Japan 100 % Investment Holding The Multi Group Ltd (“The Multi Group”) June 26, 2015 Malta 93 % Investment Holding Multi Warehouse Ltd******* December 3, 2014 Malta 93 % Online Gaming Multi Brand Gaming Ltd******* October 3, 2014 Malta 93 % Online Gaming Multilotto UK Ltd******* September 1, 2016 Malta 93 % Online Gaming Lotto Warehouse Ltd******* September 1, 2016 Malta 93 % Online Gaming Wasp Media Ltd******* August 12, 2016 Malta 93 % Online Gaming Round Spot Services Ltd******* May 6, 2015 Cyprus 93 % Online Gaming Multi Pay N.V.******* August 25, 2011 Curacao 93 % Online Gaming Multilotto Australia PTY Ltd******* December 13, 2016 Australia 93 % Online Gaming Entity Date of Place of Percentage of Principal VIEs Shenzhen E-Sun Network Co., Ltd. (“E-Sun Network”) December 7, 1999 PRC - Online Lottery Service Shenzhen Youlanguang Science and Technology Co., Ltd. (“Youlanguang Technology”) December 16, 2008 PRC - Online Lottery Service Shenzhen Guangtiandi Science and Technology Co., Ltd. (“Guangtiandi Technology”) December 16, 2008 PRC - Online Lottery Service Shenzhen Tongfu Technology Co., Ltd. (“Tongfu Technology”) August 28, 2015 PRC - Third party payment service Shenzhen Qufan Network Technology Co., Ltd. (“Shenzhen Qufan”) ***** September 13, 2013 PRC - Mobile Gaming Subsidiaries of the VIEs Shenzhen E-Sun Sky Network Technology Co., Ltd. (“E-Sun Sky Network”) * May 22, 2006 PRC - Online Lottery Service Lhasa Yicai Network Technology Co., Ltd. (“Lhasa Yicai”) ** October 17, 2014 PRC - Online Lottery Service Shenzhen Yicai Network Technology Co., Ltd. (“Shenzhen Yicai”) *** July 21, 2015 PRC - Online Lottery Service Shenzhen Wubai Zhifu Co.,Ltd. (“500Fu”)*** April 23, 2014 PRC - Third party payment service Shenzhen Fenggu Network Technology Co., Ltd. (“Shenzhen Fenggu”) **** August 27, 2015 PRC - Online Lottery Service Beijing Baifengrun Science and Technology Co., Ltd. (“Baifengrun Technology”) ***** September 13, 2011 PRC - Development, operation of Online Gaming Shenzhen Kaisheng Jinfu Enterprise Management Co., Ltd. (“Shenzhen Kaisheng”) ***** June 24, 2016 PRC - Online Spot Commodity Trading Services Beijing Daguo Xiaoxian Culture Media Co., Ltd (“Daguoxiaoxian”)****** July 24, 2014 PRC - Investment Holding * A subsidiary of E-Sun Network ** A subsidiary of E-Sun Sky Network *** A subsidiary of Youlanguang Technology **** A subsidiary of Shenzhen Yicai ***** A subsidiary of Guangtiandi Technology ****** A subsidiary of Shenzhen Qufan ******* A subsidiary of The Multi Group ******** A subsidiary of Qufan Cayman The Company, its subsidiaries and VIEs are hereinafter collectively referred to as the “Group”. Most of the entities listed above are either holding companies or companies that have no operations. The entities that have substantive operations include: E-Sun Sky Computer, Qufan Information Technology, The Multi Group and the VIEs or subsidiaries related to these entities. The Group provides online lottery purchase services, mobile gaming services, sports information services, online spot commodity trading services in the PRC, and online gaming services in Europe. The Group’s principal geographic markets are in the PRC and northern Europe. Information on Variable Interest Entities (“VIEs”) PRC laws and regulations prohibit or restrict foreign ownership of Internet businesses. To comply with these foreign ownership restrictions, the Company operates its websites and provides online lottery purchase services in the PRC through the VIEs. Prior to December 28, 2013, the Company entered into exclusive business cooperation agreements, power of attorney, equity interest pledge agreements, exclusive option agreements, financial support agreements and supplementary agreements to the exclusive option agreements (previously named as exclusive technical consulting and service agreements, power of attorney, equity pledge agreements, equity interest disposal agreements, financial support agreements, business operation agreements and intellectual properties license agreements prior to June 1, 2011) (the “Contractual Arrangements”), with several entities through E-Sun Sky Computer, which obligates E-Sun Sky Computer to absorb a majority of the expected losses from the activities of these entities’ activities, and entitles E-Sun Sky Computer to receive a majority of residual returns from these entities’ activities. As result of these contractual arrangements, these entities are considered as VIEs of the Company. Through these aforementioned agreements, the Company maintains the ability to approve decisions made by the VIEs, and the ability to acquire the equity interests in the VIEs when permitted by the PRC laws via E-Sun Sky Computer. As a result of the Contractual Arrangements and because the Company has been determined to 1) be the most closely associated with the VIEs Consolidation” On December 28, 2013, the Company agreed to provide unlimited financial support to the VIEs for their operations. In addition, pursuant to the power of attorney agreements entered into among the Company, E-Sun Sky Computer and the nominee shareholders of the VIEs, on December 28, 2013, the nominee shareholders of the VIEs assigned the rights to attend the VIEs’ shareholders' meetings and to vote on all of the matters in the VIEs that require shareholders' approval, which was originally entrusted to E-Sun Sky Computer, to the Company. As a result of the assignment of power of attorney from E-Sun Sky Computer to the Company and the provision of unlimited financial support from the Company to the VIEs, the Company has been determined to be most closely associated with the VIEs within the group of related parties and replaced E-Sun Sky Computer as the primary beneficiary of the VIEs on December 28, 2013. On January 10, 2017, as a result of acquisition of Qufan Cayman, the Company also entered into the contractual arrangements with Shenzhen Qufan through Qufan Information Technology, which obligates Qufan Information Technology to absorb a majority of the expected losses from the activities of Shenzhen Qufan, and entitles Qufan Information Technology to receive a majority of residual returns from Shenzhen Qufan. As of As of As of RMB RMB US$ ASSETS Current assets: Cash and cash equivalents 257,001 101,023 15,527 Restricted cash 3,703 1,237 190 Short-term investments - 20,000 3,074 Amounts due from intergroup companies 1,589 2,562 394 Prepayments and other current assets 109,032 38,016 5,843 Total current assets 371,325 162,838 25,028 Non-current assets: Property and equipment, net 46,986 100,627 15,466 Intangible assets, net 60,408 49,558 7,617 Deposits 4,397 4,254 654 Long-term investments 53,995 53,044 8,153 Other non-current assets 2,671 6,296 968 Goodwill 160,438 130,613 20,075 Total non-current assets 328,895 344,392 52,933 TOTAL ASSETS 700,220 507,230 77,961 LIABILITIES Current liabilities: Amounts due to intergroup companies 69,423 71,168 10,938 Accrued payroll and welfare payable 15,846 14,703 2,260 Accrued expenses and other current liabilities 67,166 57,761 8,878 Income tax payable 8,897 5,310 816 Total current liabilities 161,332 148,942 22,892 Non-current liabilities: Deferred tax liability, non-current 14,902 12,721 1,955 Long-term payables 42,705 27,673 4,253 Total non-current liabilities 57,607 40,394 6,208 TOTAL LIABILITIES 218,939 189,336 29,100 For the years ended December 31, 2015 2016 2017 2017 RMB RMB RMB US$ Net revenues 87,065 10,928 81,954 12,596 Net loss (130,330) (8,851) (124,034) (19,064) For the years ended December 31, 2015 2016 2017 2017 RMB RMB RMB US$ Net cash (used in) operating activities (83,113) (50,876) (162,328) (24,949) Net cash (used in) provided by investing activities (105,922) 166,222 6,350 976 Net cash (used in) provided by financing activities - - - - There was no pledge or collateralization of the VIEs’ assets. Creditors of the VIEs have no recourse to the general credit of the Company, which is the primary beneficiary of the VIEs. In addition, the Company has not provided any financial support to its VIEs as of December 31, 2017.

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2017
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The accompanying consolidated financial statements have been prepared in accordance with United States Generally Accepted Accounting Principles (“U.S. GAAP”). Certain comparative amounts have been reclassified to conform with the current year’s presentation. The consolidated financial statements of the Group include the financial statements of the Company, its subsidiaries and VIEs in which it has a controlling financial interest. The results of the subsidiaries are consolidated from the date on which the Group obtained control and continue to be consolidated until the date that such control ceases. A controlling financial interest is typically determined when a company holds a majority of the voting equity interest in an entity. Furthermore, if the Company demonstrates that it has ability to control the VIEs through its rights to all the residual benefits of the VIEs and its obligation to fund losses of the VIEs then the entity is consolidated. All significant intercompany balances and transactions among the Company, its subsidiaries and VIEs have been eliminated on consolidation. Translations of amounts from RMB into US$ for the convenience of the reader were calculated at the noon buying rate of US$ 1.00 6.5063 Foreign currency translation The functional currency of the Company, BVI, 500wan HK, 500.com UK, 500.com USA, 500.com JP, Qufan Cayman, Qufan HK is the US$. The functional currency of The Multi Group and its subsidiaries and Qufan Malta is EUR. E-Sun Sky Computer, Qufan Information Technology and their VIEs determined their functional currencies to be the RMB, which is their respective local currencies based on the criteria of ASC 830, “ Foreign Currency Matters” Transactions denominated in foreign currencies are remeasured into the functional currency at the exchange rates prevailing on the transaction dates. Exchange gains and losses resulting from foreign currency transactions are included in the consolidated statements of comprehensive income (loss). The Group accounts for its business combinations using the purchase method of accounting in accordance with ASC 805 (“ASC 805”), “ Business Combinations” The determination and allocation of fair values to the identifiable assets acquired, liabilities assumed and noncontrolling interests is based on various assumptions and valuation methodologies requiring considerable judgment from management. The most significant variables in these valuations are discount rates, terminal values, the number of years on which to base the cash flow projections, as well as the assumptions and estimates used to determine the cash inflows and outflows. The Group determines discount rates to be used based on the risk inherent in the related activity’s current business model and industry comparisons. Terminal values are based on the expected life of assets, forecasted life cycle and forecasted cash flows over that period. For the Company's majority-owned VIEs, a noncontrolling interest is recognized to reflect the portion of their equity which is not attributable, directly or indirectly, to the Group. “Net income (loss)” on the consolidated income statements includes the “net loss attributable to noncontrolling interests”. The cumulative results of operations attributable to noncontrolling interests are also recorded as noncontrolling interests in the Company's consolidated balance sheets. Cash and cash equivalents represent cash on hand and time deposits, which have original maturities of three months or less Restricted cash represents cash held by banks which were granted by the government and designated only for the purchase of fixed assets for certain approved projects. Time deposits Time deposits represent deposits in commercial banks with original maturities of greater than three months but less than a year 20,589 23,859 20,574 3,162 Accounts receivables are carried at original invoiced amount less an allowance for doubtful accounts when collection of the amount is no longer probable. In evaluating the collectability of receivable balances, the Group considers factors such as customer circumstances or age of the receivable. Accounts receivable are written off after all collection efforts have ceased. Collateral is not typically required, nor is interest charged on accounts receivable. Property and equipment are stated at cost and depreciated using the straight-line method over the estimated useful lives of the assets, as follows: Estimated Useful Life Estimated Residual Electronics and office equipment 3-5 years 5 % Motor vehicles 5-10 years 2-5 % Leasehold improvements Shorter of lease term or the estimated useful lives of the assets - Repair and maintenance costs are charged to expense as incurred, whereas the cost of renewals and betterment that extend the useful lives of property and equipment are capitalized as additions to the related assets. Retirements, sales and disposals of assets are recorded by removing the cost and accumulated depreciation from the asset and accumulated depreciation accounts with any resulting gain or loss reflected in the consolidated statements of comprehensive income (loss). Intangible assets represent computer software, internet domain name, licensing agreement, and intangible assets arising from business combination. Computer software, internet domain name and licensing agreement purchased from third parties are initially recorded at cost and amortized on a straight line basis over their estimated useful lives of the respective assets. The Group performs valuation of the intangible assets arising from business combination to determine the relative fair value to be assigned to each asset acquired. The acquired intangible assets are recognized and measured at fair value and are expensed or amortized using the straight-line approach over the estimated useful life of the assets. Estimated useful lives of the respective assets are set out as follows: Estimated Useful Life Computer software 3-10 years Internet domain name 10 years Licensing agreement Agreement term Intangible assets arising from business combination Online payment and other licenses, brand name 10-15 years Mobile applications and software 5 years The Group assesses goodwill for impairment in accordance with ASC 350-20 (“ASC 350-20”), “ Intangibles–Goodwill and Other: Goodwill” The Group has the option to first assess qualitative factors to determine whether it is necessary to perform the two-step test in accordance with ASC 350-20. If the Group believes, as a result of the qualitative assessment, that it is more-likely-than-not that the fair value of the reporting unit is less than its carrying amount, the two-step quantitative impairment test described above is required. Otherwise, no further testing is required. In the qualitative assessment, the Group considers primary factors such as industry and market considerations, overall financial performance of the reporting unit, and other specific information related to the operations. In performing the two-step quantitative impairment test, the first step compares the carrying amount of the reporting unit to the fair value of the reporting unit based on either quoted market prices of the ordinary shares or estimated fair value using a combination of the income approach and the market approach. If the fair value of the reporting unit exceeds the carrying value of the reporting unit, goodwill is not impaired and the Group is not required to perform further testing. If the carrying value of the reporting unit exceeds the fair value of the reporting unit, then the Group must perform the second step of the impairment test in order to determine the implied fair value of the reporting unit’s goodwill. The fair value of the reporting unit is allocated to its assets and liabilities in a manner similar to a purchase price allocation in order to determine the implied fair value of the reporting unit goodwill. If the carrying amount of the goodwill is greater than its implied fair value, the excess is recognized as an impairment loss. In 2017, the Group performed qualitative assessments for the reporting units. Based on the requirements of ASC 350-20, the Group evaluated all relevant factors, weighed all factors in their entirety and concluded that the fair value was greater than the carrying amount of the newly acquired entities, and further impairment testing on goodwill was unnecessary as of December 31, 2017. The Group evaluates its long-lived assets or asset group, including property and equipment and intangible assets, with finite lives for impairment whenever events or changes in circumstances (such as a significant adverse change to market conditions that will impact the future use of the assets) indicate that the carrying amount of a group of long-lived assets may not be fully recoverable. When these events occur, the Group evaluates the impairment by comparing the carrying amount of the assets to future undiscounted cash flows expected to result from the use of the assets and their eventual disposition. If the sum of the expected undiscounted cash flow is less than the carrying amount of the assets, the Group recognizes an impairment loss based on the excess of the carrying amount of the asset group over its fair value. No impairment charge for the long-lived assets was recognized for any of the years presented. All highly liquid investments with original maturities of greater than three months, but less than 12 months, are classified as short-term investments in accordance with ASC 320-10, “Investments—Debt and Equity Securities” “Derivatives and Hedging” Long-term investments The Group’s long-term investments consist of cost method investments, equity method investments and available-for-sale investments. In accordance with ASC 325, “ Investments-Other” Investments in entities in which the Group can exercise significant influence but does not own a majority equity interest or control are accounted for using the equity method of accounting in accordance with ASC 323 (“ASC 323”), “Investments-Equity Method and Joint Ventures” According to the above testing, an impairment loss of RMB 28.8 4.4 Available-for sale investments are reported at fair value, with unrealized gains and losses recorded in accumulated other comprehensive income. Realized gains or losses are included in earnings during the period in which the gain or loss is realized. An impairment loss on the available-for-sale investments is recognized in the consolidated statements of comprehensive income (loss) when the decline in value is determined to be other-than-temporary. Investments in limited partnerships greater than 3% to 5% are considered more than minor and accounted for using the equity method, unless it is readily apparent that the Group has virtually no influence over the partnership’s financial and operating policies. Financial instruments include cash and cash equivalents, restricted cash, time deposits, accounts receivable, structured deposit (Note 5), other receivables, long-term investments and accounts payable. As of December 31, 2016 and 2017, the carrying values of these financial instruments, approximate their fair values due to their short-term maturities. The Group determined the fair value of the derivative redemption feature and the structured deposit with the assistance of an independent third -party valuation firm. The Group applies ASC 820 (“ASC 820”), “Fair Value Measurements and Disclosures ASC 820 establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows: Level 1— Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2— Include other inputs that are directly or indirectly observable in the marketplace. Level 3— Unobservable inputs which are supported by little or no market activity. ASC 820 describes three main approaches to measuring the fair value of assets and liabilities: (1) market approach; (2) income approach, and (3) cost approach. The market approach uses prices and other relevant information generated from market transactions involving identical or comparable assets or liabilities. The income approach uses valuation techniques to convert future amounts to a single present value amount. The measurement is based on the value indicated by current market expectations about those future amounts. The cost approach is based on the amount that would currently be required to replace an asset. The Group’s revenues were derived principally from online lottery purchase services before voluntary suspension of this service since April 2015. During the voluntary suspension period, The Group diversified its revenue streams, and derived revenues from mobile gaming services, sports information services, online spot commodity trading services and online gaming services. Revenue is recognized in accordance with ASC 605, “Revenue Recognition” “Revenue from Contracts with Customers” The Company will apply the new revenue standard beginning January 1, 2018, and plans to adopt a modified retrospective approach upon adoption. The Group has set up an implementation schedule and is currently in the process of analyzing each of the Group’s revenue streams in accordance with the new revenue standard to determine the impact on the Group’s consolidated financial statements. Specifically, we recognize revenues based on the following revenue recognition principles: Online lottery purchase services The Group earns service income for online lottery purchase services and revenues are generated from processing lottery purchase orders from end users (“Service Fee”). The Group receives purchase orders from end users through its online platforms, which include website and mobile applications, and processes the orders with the lottery administration centers. Service Fee is received from the lottery administration centers based on the pre-determined service fee rate and the total amount of the processed orders. Pursuant to ASC 605-45, “ Principal Agent Considerations Contingent service fee The Group was also entitled to receive additional Service Fee from lottery administration centers when the total amounts of purchase orders reach an agreed threshold (“Contingent Service Fee”). As the Group is the agent in providing lottery purchase services, any Contingent Service Fee received is recorded as net revenue when the agreed thresholds are reached. Once the Group reaches the agreed thresholds, the Contingent Service Fee is then fixed and not subject to any adjustments. As a result of the voluntarily suspension of the online lottery purchase services mentioned above, the Group did not generate any revenue from this source either since April 2015, and it is uncertain when we will be able to generate this fee again in the future. The Super VIP incentive Certain qualified end users (“Super VIP”) are entitled to receive incentives from the Group based on actual purchase amount of each transaction. As the Group does not receive an additional service or benefit from the Super VIP other than service fee earned from lottery administration centers by the Group from the transaction, the incentives are recognized as a reduction of revenue at each year end in accordance with ASC 605-50, “ Customer Payments and Incentives” Lottery pool purchase service Lottery pools involve individual end users purchasing a share in a pooled lottery outcome or group of outcomes with other end users. Through the lottery pool purchase service, an end user, an initiator, starts a lottery pool by specifying a range of parameters, such as the lottery portfolio, total purchase amount and payout ratio. The initiator is required to commit a minimum initial purchase amount when they initiate a pool, usually a certain percentage of the total purchase amount. Other end users then join the pool by agreeing to the parameters set by the initiator and committing on the purchase amount. When the total purchase amount as specified by the initiator is reached, the pooled lottery purchase order will be delivered in the manner specified by the initiator. When the actual purchase amount does not reach the total purchase amount as specified by the initiator but reaches a certain percentage of total purchase amount before the lottery pool purchase deadline, the Group contributes the remaining outstanding purchase amount (i.e., residual amount of lottery pool) to complete the lottery pool transaction. If the tickets win prizes from the lottery, the Group distributes the cash prizes to the end users based on the predetermined payout ratio, and the residual amount after distribution is retained by the Group. Since the Group contributes the residual amount of lottery pool to earn Service Fee from the purchase made by the lottery pool and does not provide any service to the lottery administration centers, the residual amount of lottery pool contributed by the Group paid to the lottery administration centers is recognized as a reduction of revenue. The residual amount of the lottery pool retained by the Group after distribution of the prizes are presented as “other operating income”, and recognized upon the announcement of lottery results, as the Group’s principal activity is to provide lottery purchase services to end users. Mobile Gaming Services The Group provides mobile gaming services through its designated mobile applications Quiz, Night of Texas Hold’em Poker and Paiyou for Texas Hold’em Poker, and derives revenues from in-game virtual tokens and other virtual items in its game development operations. Once the users purchase virtual tokens or other virtual items through the Group’s own charging system, the Group has an implied obligation to provide the services which enable the virtual tokens or other virtual items to be displayed or used in the games. Thus, the Group initially records the proceeds received from the sales of virtual tokens and other virtual items as deferred revenue, and once they are consumed when the services are rendered to the respective paying players, the Group recognizes the attributable portion of the deferred revenue as revenue. For consumable virtual items representing items that are extinguished after consumption in the form of fixed charges levied on each round of games played, the Group recognizes revenue when the items are consumed and the related services are rendered, since the paying players will not continue to benefit from the virtual items thereafter. For durable virtual items that are accessible and beneficial to paying players over an extended period, the Group recognizes revenue ratably over the average life of durable virtual items for the applicable game, which the Group makes best estimates to be average playing period of paying players. The Group tracks each paying player’s log-in history to estimate the average playing period of paying players. While the Group believes its estimates to be reasonable based on sufficient available paying player information, it may revise such estimates in the future as the games’ operation periods change or there is indication that the similarities in characteristics and playing patterns of paying players of the games change. Any adjustments arising from changes in the estimates of the average paying player life would be applied prospectively. Sports Information Services The Group offers a comprehensive sports information portal via a designated mobile application, which covers (i) real time soccer match information; and (ii) data-driven soccer match predictions generated by our proprietary analysis engine. Users can also post free or pay-per-view contents such as proprietary observations and analyses on the sports information portal. The users pay for each information and data subscription at a fixed price, and the Group pays the original information providers a fixed percentage of total purchase amount. Revenue is recognized when users is accessible to the pay-per-view contents. The Group records the revenue on a net basis because the Group is not the primary obligor to provide the information, but acts as an agent in providing such purchase services. Online spot commodity trading services The Group provides online spot commodity trading services through our designated website and mobile application in Shenzhen Kaisheng . We provide our customers with reliable online spot commodity trading for gold trade and delay products across PC and mobile devices. We processed customer orders through a commercial bank, which is a member of Shanghai Gold Exchange in the past, and is in the process of forming a joint venture with another member of such exchange in the second quarter of 2018 to process its customer orders. Trading commissions are received from the based on the pre-determined fee rate and the total amount of the processed orders. Online gaming services The Group also provides online lottery betting and online casino platforms through our designated website in TMG, We earn difference between betting and winning for online lottery betting services and online casino platforms as revenues that are generated from our registered users. The registered users enter into certain terms and conditions when they first open their accounts with us. Lottery and Casino purchase orders are placed by users through our online platforms view website. Then we process these orders. Prior to processing orders, users prepay all purchase amounts. We pay users prizes when there are any winnings attributable to users. We record revenues on a net basis by deducting the winning amounts from betting amounts. Revenue comprises the fair value of the consideration received for the provision of internet gaming in the ordinary course of the company's activities, which is recognized when the outcome of an event is known. Account handling expenses Account handling expenses, which consist primarily of transaction fees charged by banks and third-party payment processors for cash transfers between our users’ accounts on our online platform including websites and mobile applications and their accounts with banks or third-party payment processors, were RMB 7.0 0.7 3.7 0.6 Server leasing and maintenance expenses Server leasing and maintenance expenses, which consist primarily of leasing expense of servers and other equipment used in providing online services, were RMB 7.6 8.3 9.2 1.4 Lottery Insurance expenses Lottery insurance expenses, are consist of insurance premiums payable to insurers for covering the first two categories of winnings in online gaming services for betting on the outcome of lotteries after the acquisition of TMG in July 2017, were RMB 7.0 1.1 Platform fee Platform fees, are consist of fees payable to online gaming software suppliers for providing various online casino games on The Multi Group’s websites after the acquisition of TMG in July 2017, were RMB 5.9 0.9 Regulatory and compliance fees Regulatory and compliance fees, which consist of fees payable to regulatory bodies such as Gambling Commission, HM Revenue & Customs, Malta Gaming Authority and Certria EOOD after the acquisition of TMG in July 2017, were RMB 0.6 0.1 Amortization fees Amortization fees, which consist primarily of amortization of intangible assets arising from business combination, were RMB 1.2 26.1 4.0 Cost of services also comprises employee costs, business tax and surcharges and other direct costs incurred in providing services. These costs are expensed as incurred. Commission to certain internet companies The Group is responsible to pay certain internet companies a predetermined fixed percentage of the total purchase or deposit amount only if 1) public users enter the Group’s website by redirection through these internet companies’ website, and/or 2) public users have successfully purchased any lottery tickets, virtual tokens, or betting, or deposited certain amounts of cash into their accounts in the Group’s website. The Group is responsible for providing respective services when such public users enter the Group’s website to purchase lottery tickets, virtual tokens or betting. Since these internet companies are providing similar services as those services that have been provided by the Group’s internal sales personnel agent, any relevant costs to be paid by the Group is treated as sales and marketing expenses. Advertising expenditure Advertising costs are expensed as incurred and are included in “sales and marketing expenses” in the consolidated statements of comprehensive income (loss). Advertising expenses for the years ended December 31, 2015, 2016 and 2017 were approximately 26,192 347 967 149 Sponsorship expenses The Group’s sales and marketing expenses also consist of payments under a sponsorship contract. Accounting for sponsorship payments is based upon specific contract provisions. Generally, sponsorship payments are expensed on a straight-line basis over the term of the contract after giving recognition to periodic performance provisions of the contract. Prepayments made under the contract are included in prepayments based on the period to which the prepayments apply. Awards granted to certain qualified end users All new end users are entitled to receive bonus credits from the Group upon the initial registration of their user accounts and all existing users are entitled to receive bonus credits from the Group by depositing a specified amount of cash into their user accounts during a marketing promotion period. The end users can only apply the bonus credits received against future lottery product purchases and online gaming orders processed by the Group. The bonus credits are recognized as sales and marketing expenses when the bonus credits are granted to the end users. All new and existing end users are entitled to receive additional prize money for winning tickets from selected lotteries purchased through the Group during a marketing promotion period. The cost of the additional prize money is to be shared between the lottery administration centers and the Group at a predetermined percentage or funded entirely by the Group. As the Group does not receive an identifiable benefit in return for the consideration that is sufficiently separable from the lottery administration centers’ purchase of lottery processing services from the Group, the additional prize money provided to the lottery administration center, are recognized as a reduction of revenue at each period end in accordance with ASC 605-50, “ Customer Payments and Incentives”. Service development expenses consist primarily of personnel-related expenses incurred for the development of, enhancement to, and maintenance of the Group’s website that either (i) did not meet the capitalization criteria in accordance with ASC 350, “Intangibles - Goodwill and other” The Group leases certain office facilities under cancelable and non-cancelable operating leases, generally with an option to renew upon expiration of the lease term. In accordance with ASC 840, “ Leases” For the lessee, a lease is a capital lease if any of the following conditions exist: a) ownership is transferred to the lessee by the end of the lease term, b) there is a bargain purchase option, c) the lease term is at least 75% of the properties estimated remaining economic life or d) the present value of the minimum lease payments at the beginning of the lease term is 90% or more of the fair value of the leased property to the lessor at the inception date. The Group follows the liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are determined based on the difference between the financial reporting and tax bases of assets and liabilities using enacted tax rates that will be in effect in the period in which the differences are expected to reverse. The Group records a valuation allowance to offset deferred tax assets if based on the weight of available evidence, it is more-likely-than-not that some portion, or all, of the deferred tax assets will not be realized. The effect on deferred taxes of a change in tax rates is recognized in the consolidated statements of comprehensive income (loss) in the period that includes the enactment date. Interest and penalties arising from underpayment of income taxes are computed in accordance with the related PRC tax law and is classified in the consolidated statements of comprehensive income (loss) as income tax expense. The amount of interest expense is computed by applying the applicable statutory rate of interest to the difference between the tax position recognized and the amount previously taken or expected to be taken in a tax return. In accordance with the provisions of ASC 740 (“ASC 740”), “Income taxes” tax position if a tax return position or future tax position is “more likely than not” to be sustained upon examination based solely on the technical merits of the position. Tax positions that meet the “more likely than not” recognition threshold are measured at the largest amount of tax benefit, determined on a cumulative probability basis, that has a greater than fifty percent likelihood of being realized upon settlement. In conjunction with ASC 740, the Group also applied ASC 740-30 (“ASC 740-30”), “ Income Taxes: Other Considerations or Special Areas” Share options and restricted shares granted to employees and directors Share options and restricted shares Compensation - Stock compensation ASC 718 requires forfeitures to be estimated at the time of grant and revised, if necessary, in the subsequent period if actual forfeitures differ from initial estimates. Forfeiture rate is estimated based on historical and future expectation of employee turnover rate and is adjusted to reflect future change in circumstances and facts, if any. Share-based compensation expense is recorded net of estimated forfeitures such that expense was recorded only for those share-based awards that are expected to vest. To the extent the Group revises this estimate in the future, the share-based payments could be materially impacted in the period of revision, as well as in following periods. The compensation costs associated with a modification of the terms of the award (“Modification Award”) are recognized if either the original vesting condition or the new vesting condition has been achieved. Such compensation costs cannot be less than the grant-date fair value of the original award. The incremental compensation cost is measured as the excess of the fair value of the Modification Award over the fair value of the original award at the modification date. Therefore, in relation to the Modification Award, the Group recognizes share-based compensation over the vesting periods of the new options, which comprises, (1) the amortization of the incremental portion of share-based compensation over the remaining vesting term, and (2) any unrecognized compensation cost of original award, using either the original term or the new term, whichever is higher for each reporting period. Share options granted to non-employees The Group records share-based compensation expense for awards granted to non-employees in exchange for services at fair value in accordance with the provisions of ASC 505-50, “ Equity-based payment to non-employees” The Group, with the assistance of an independent valuation firm, determined the fair values of the share options recognized in the consolidated financial statements. The binomial option pricing model is applied in determining the estimated fair value of the share options granted to employees and non-employees. The Group computes earnings per Class A and Class B ordinary shares in accordance with ASC 260 (“ASC 260”), “ Earnings Per Share” The liquidation and dividend rights of the holders of the Group’s Class A and Class B ordinary shares are identical, except with respect to voting. As a result, and in accordance with ASC 260, the undistributed earnings for each year are allocated based on the contractual participation rights of the Class A and Class B ordinary shares as if the earnings for the year had been distributed. As the liquidation and dividend rights are identical, the undistributed earnings are allocated on a proportionate basis. Further, as the conversion of Class B ordinary shares is assumed in the computation of the diluted net loss per share of Class A ordinary shares, the undistributed earnings are equal to net loss for that computation. For the purposes of calculating the Group’s basic and diluted earnings (loss) per Class A and Class B ordinary shares, the ordinary shares relating to the options that were are assumed to hav

CONCENTRATION OF RISKS

CONCENTRATION OF RISKS	12 Months Ended
	Dec. 31, 2017
CONCENTRATION OF RISKS [Abstract]
CONCENTRATION OF RISKS	3. CONCENTRATION OF RISKS Concentration of credit risk Assets that potentially subject the Group to significant concentration of credit risk primarily consist of cash and cash equivalents, time deposits and accounts receivable. As of December 31, 2017, substantially all of the Group’s cash and cash equivalents and time deposits were deposited in financial institutions located in the PRC, Hong Kong, Malta, Japan and USA, which management believes are of high credit quality. Accounts receivable are typically unsecured and derived from commission earned from lottery administration centers in the PRC. The risk with respect to accounts receivable ismitigated by credit evaluations the Group performs on its lottery administration centers and its ongoing monitoring of outstanding balances. Certain Risks and Uncertainties The Group’s newly acquired subsidiary, the Multi Group’s operations are dependent on its continued licensing by the Nordic countries gaming regulatory bodies such as the Curacao e-Gaming license, the remote gambling licenses from Malta, the remote operating licenses from the UK, and the remote bookmaker’s license from Ireland. The loss of a license could have a material adverse effect on future results of its operations. The Group is dependent on the PRC and European markets for a significant number of its patrons and revenues. If economic conditions in these areas deteriorate or additional gaming licenses are awarded to other competitors, the Group’s results of operations could be adversely affected. The Group is also dependent on the PRC economy in general, and any deterioration in the national economic, energy, credit and capital markets could have a material adverse effect on future results of operations. The Group is dependent upon a stable gaming and admission tax structure in the locations in which it operates. Any change in the tax structure could have a material adverse effect on future results of operations. The Group transacts the majority of its business in RMB, which is not freely convertible into foreign currencies. On January 1, 1994, the PRC government abolished the dual rate system and introduced a single rate of exchange as quoted daily by the People’s Bank of China (the “PBOC”). However, the unification of the exchange rates does not imply that the RMB may be readily convertible into US$ or other foreign currencies. All foreign exchange transactions continue to take place either through the PBOC or other banks authorized to buy and sell foreign currencies at the exchange rates quoted by the PBOC. Approval of foreign currency payments by the PBOC or other institutions requires submitting a payment application form together with suppliers’ invoices, shipping documents and signed contracts. Additionally, the value of the RMB is subject to changes in central government policies and international economic and political developments affecting supply and demand in the PRC foreign exchange trading system market. Current vulnerability due to change of regulations or policies The Group’s operations may be adversely affected by significant political, economic and social uncertainties in the PRC. Although the PRC government has been pursuing economic reform policies for more than 30 years, no assurance can be given that the PRC government will continue to pursue such policies or that such policies may not be significantly altered, especially in the event of a change in leadership, social or political disruption or unforeseen circumstances affecting the PRC’s political, economic and social conditions. There is also no guarantee that the PRC government’s pursuit of economic reforms will be consistent or effective. In October 2012, the Group was notified by China Sports Lottery Administration Center that the Group was one of the two entities that had been approved by the Ministry of Finance (“MOF”) to conduct online sales of sports lottery products in PRC on behalf of China Sports Lottery Administration Center. In particular, such approval mandated that the China Sports Lottery Administration Center use its best effort to develop an online lottery sales management system as part of a pilot program for online lottery sales in PRC, and once such a management system is finished, the China Sports Lottery Administration Center should apply again for approval from the MOF for official commencement of online lottery sales in the PRC. However, since the operation of online sports lottery sales services by China Sports Lottery Administration Center itself is in a pilot phase and is subject to further approval by the MOF, the Group’s operation of online sales of sports lottery products may be subject to suspension if China Sports Lottery Administration Center fails to obtain such further approval from the MOF. On January 15, 2015, the MOF, the Ministry of Civil Affairs and the General Administration of Sports of the People’s Republic of China jointly promulgated the Notice on Issues related to the Self-Inspection and Self-Remedy of Unauthorized Online Lottery Sales (the “Self-Inspection Notice”), as a further step to regulate the lottery market in PRC and sanction unauthorized online lottery sales. On February 28, 2015, all sports lottery administration centers temporarily suspended online purchase orders for lottery products in response to the Self-Inspection Notice. On April 3, 2015, eight competent government authorities, namely, the MOF, the Ministry of Public Security, the State Administration for Industry and Commerce, the Ministry of Industry and Information Technology, Ministry of Civil Affairs, People’s Bank of China, the General Administration of Sports of China and China Banking Regulatory Commission, jointly released a public bulletin with regard to online lottery sales in China, or Bulletin 18. Bulletin 18 mandates, among other things, that (i) all institutions, online entities, or individuals which provide unauthorized online lottery sales services, either directly or through agents, shall immediately cease such services and all provincial governmental authorities of finance, civil affairs and sports shall investigate and sanction unauthorized online lottery sales in their respective jurisdictions according to relevant laws and regulations; and (ii) lottery issuance authorities that plan to sell lottery products online are required to obtain a consent from the Ministry of Civil Affairs or the General Administration of Sports of China in order to submit an application for written approval by the MOF. Although the Group is one of the two entities that had been approved by the MOF to conduct online sales of sports lottery products in PRC on behalf of China Sports Lottery Administration Center, the Group decided to voluntarily and temporarily suspend all of its lottery sales services on April 4, 2015. As of December 31, 2017, the online lottery sales business is still not resumed.

BUSINESS COMBINATION

BUSINESS COMBINATION	12 Months Ended
	Dec. 31, 2017
BUSINESS COMBINATION [Abstract]
BUSINESS COMBINATION	BUSINESS COMBINATION Business Combination in 2017: Acquisition of Daguoxiaoxian On May 8, 2017, Shenzhen Qufan entered into a share purchase agreement with the shareholder of Daguoxiaoxian, named Fu Rong, to acquire 70 2.0 By obtaining the cooperation agreement, Daguoxiaoxian is authorized to operate China Competitive Poker Championship, from May 14, 2017 to May 14, 2018, with one-year extension upon the expiration if no objection between both parties. The Group acquired Daguoxiaoxian primarily for the cooperation agreement. Acquisition of The Multi Group On July 17, 2017 (“the acquisition date”), the Company acquired 93.0 49.8 59.9 As of July 17, 2017, the Group settled payment of EUR 49,754 The Group recognized RMB18,766( US$ 2,884 The calculation of RMB amount was based on the exchange rate of 1.00 EUR to 7.7514 Amount Amount Amount Amortization Years EUR RMB USD License 19,400 150,377 23,113 10.0 Brand name 11,100 86,041 13,224 10.0 Software 900 6,976 1,072 5.0 Others 7,116 55,159 8,478 Total identifiable assets acquired 38,516 298,553 45,887 Deferred tax liabilities (1,164) (9,023) (1,694) Other current liabilities (1,422) (11,022) (1,387) Total liabilities assumed (2,586) (20,045) (3,081) Net identifiable assets acquired 35,930 278,508 42,805 Noncontrolling interests # 2,915 22,595 3,473 Total Consideration 49,754 385,662 59,275 Goodwill 16,739 129,749 19,943 In accordance with the acquisition agreement, the Group is obligated to purchase the remaining 7 For the year ended December 31, 2017 EUR RMB USD Noncontrolling interest-valuation* 2,915 22,595 3,472 Total comprehensive income attributable to noncontrolling interest (70) (543) (83) Redeemable noncontrolling interest 2,845 22,052 3,389 *Noncontrolling interest in EUR was evaluated by third party appraiser as of the acquisition day. The calculation of RMB amount was based on the exchange rate of 1.00 EUR to 7.7514 RMB at the acquisition date. Goodwill, which is not tax deductible, is primarily attributable to the excess of the consideration and fair value of noncontrolling interest over the fair value of the net identifiable assets of the acquiree and is related to synergies expected to be achieved from the acquisition. Acquired intangible assets have weighted average economic lives from the date of purchase as follows: License 10.0 Brand name 10.0 Software 5.0 As of the acquisition date, the fair value of the 7 2,915 16 2 3 Since the acquisition date, The Multi Group contributed revenues of RMB 49,370 6,447 2,959 386 For the years ended December 31, (unaudited) 2016 2016 2017 2017 2017 EUR RMB EUR RMB USD Pro forma total revenues 11,686 76,893 12,188 93,334 14,345 Pro forma net income (loss) 2,519 16,576 (1,614) (12,360) (1,900) Pro forma net income (loss) attributable to 2,343 15,416 (1,501) (11,495) (1,767) These amounts have been calculated after applying the Company’s accounting policies. Business Combination in 2016: Acquisition of Qufan Cayman, Qufan HK and Shenzhen Qufan: On November 25, 2016 (“the acquisition date”), the Group invested in ordinary shares representing a 51.0 110.5 The acquisition-date fair value of the consideration transferred totaled RMB 105,000 Amount RMB Fair value of consideration transferred Cash consideration 52,760 Contingent consideration 52,240 Total Consideration 105,000 As of December 31, 2016, the Group paid RMB 510 52,250 52,240 The contingent consideration arrangement requires the Group to pay the consideration of RMB 57,840 52,240 54,550 As the Group disposed Qufan Cayman and Shenzhen Qufan on February 9, 2018, the contingent consideration was offset against the disposal consideration and was no longer required to be paid. The Group recognized RMB 2,661 The following table summarizes the fair values of the assets acquired and liabilities assumed at the acquisition date. Amount Amortization Years RMB Cash 439 Mobile applications 60,200 5.0 Other receivables 37,863 Total identifiable assets acquired 98,502 Deferred tax liabilities (15,050) Other current liabilities (10,281) Total liabilities assumed (25,331) Net identifiable assets acquired 73,171 Noncontrolling interests 98,784 Total Consideration 105,000 Goodwill 130,613 Goodwill, which is not tax deductible, is primarily attributable to the excess of the consideration and fair value of noncontrolling interest over the fair value of the net identifiable assets of the acquiree and is related to synergies expected to be achieved from the acquisition. Acquired intangible assets consist primarily of mobile applications, which have estimated weighted average economic lives of 5 The fair value of the 49 98,784 3 29 3 Since the acquisition date, Qufan contributed revenues of RMB 5,669 59,465 9,140 706 15,328 2,356 The following unaudited pro forma information summarizes the results of operations of the Group for the years ended December 31 2015 and 2016, as if the acquisition had been completed on January 1, 2015. These pro forma results have been prepared for comparative purposes only and do not purport to be indicative of what operating results would have been had the acquisition actually taken place on the date indicated and may not be indicative of future operating results. For the years ended December 31, (unaudited) 2015 2016 2016 RMB RMB US$ Pro forma total revenues 99,921 27,379 3,943 Pro forma net loss (333,814) (217,359) (31,306) Pro forma net loss attributable to 500.com Limited (328,795) (209,921) (30,235) These amounts have been calculated after applying the Company’s accounting policies and adjusting the results of Qufan to reflect the additional amortization that would have been charged assuming the fair value adjustments to intangible assets had been applied on January 1, 2015, together with the consequential tax effects. The Group has subsequently disposed Qufan in February 2018 due to a change of business strategy. Acquisition of Shenzhen Caiyu: On July 25, 2016 (“the acquisition date”), one of the Group’s VIE subsidiaries, Guangtiandi acquired 100.0 1.0 Amount RMB Cash 700 Other receivables 635 Total identifiable assets acquired 1,335 Other current liabilities (2,660) Total liabilities assumed (2,660) Net identifiable liabilities acquired (1,325) Total Consideration 1,000 Goodwill 2,325 Since the acquisition date, Shenzhen Caiyu contributed revenues of RMB 1,792 424 10,897 1,675 94 14 The Group subsequently disposed Shenzhen Caiyu on November 2, 2017 due to a change in business strategy and recognized a disposal gain of RMB 5,477 842 the year of The actual results of operation after the acquisition date and pro forma results of operations for the acquisition of Shenzhen Caiyu are not presented because the effects were immaterial.

INVESTMENTS

INVESTMENTS	12 Months Ended
	Dec. 31, 2017
INVESTMENTS [Abstract]
INVESTMENTS	5. INVESTMENTS Short-term Investments Short-term investments of the Group comprised of a structured deposit investment. The Structured deposit was carried at fair value of RMB 100,000 120,000 18,444 Besides the increase in principal of Structured deposits of RMB 20,000 3,074 Long-term Investments Long-term investments consisted of the following: As of As of As of RMB RMB US$ Cost Method Investments Private companies 45,156 47,214 7,256 Limited partnerships 19,137 22,290 3,426 Cost of cost method investments 64,293 69,504 10,682 Impairment loss on equity investment (8,583) (3,267) (502) Carrying amount of cost method investments 55,710 66,237 10,180 Equity Method Investments Private company 5,500 - - Listed company - 283,655 43,597 Limited partnership 20,796 27,331 4,201 Cost of equity method investments 26,296 310,986 47,798 Impairment loss on equity investment - (27,893) (4,287) Loss from equity method investment (813) (2,257) (347) Carrying amount of equity method investments 25,483 280,836 43,164 Available-for-sale investments Available-for-sale investments 3,512 - - Change in fair value of available-for-sale investments 754 - - Carrying amount of available-for-sale investments 4,266 - - Total carrying amount of long-term investments 85,459 347,073 53,344 Cost method investments Private companies In January 2014, the Group acquired 20 5,000 302 46 In April 2014, the Group acquired 19 114 In March 2015, the Group acquired 10 2,000 10 In March 2015, the Group acquired 2 500 In August 2015, the Group acquired 1.29 1,373 1.29 13 477 In June 2016, the Group acquired 0.84 10,000 In November 2016, the Group acquired 2 600 In March 2017, the Group acquired 5 1,250 All of these above-mentioned investments were classified as cost method investments as the Group does not have significant influence over these entities. For the year ended December 31, 2016, the Group recognized an impairment loss of RMB 3,469 114 Limited partnerships In June 2014, the Group and Danhua Capital L.P (“Danhua”) entered into a subscription agreement, whereby the Group agreed to purchase limited partnership interest in Danhua’s fund (the “Fund”) in the amount of US$ 1,000 1.1 The Fund’s investment strategy is primarily to invest in emerging companies operating in the USA and PRC. The Fund’s investments are focused in the technology, media and telecommunications sectors. The Fund is scheduled to be in existence until November 15, 2021, unless terminated sooner or extended in accordance with the amended and restated limited partnership agreement. In June 2015, the Group and Beijing Heimatuoxin Venture Capital L.P. (“Heimatuoxin”) entered into a subscription agreement, whereby the Group agreed to purchase 3.49% limited partnership interest in Heimatuoxin for the total amount of RMB 3,000 707 Heimatuoxin’s investment strategy is primarily to invest in emerging companies operating in the PRC. Heimatuoxin’s investments are focused in the technology, media and telecommunications sectors. Heimatuoxin is scheduled to be in existence until April 16, 2021, unless terminated sooner or extended in accordance with the amended and restated limited partnership agreement. In June 2016, the Group and Shanghai Jingyan Corporate Development Centre L.P. (“Jingyan”) entered into a subscription agreement, whereby the Group agreed to purchase 4.64% limited partnership interest in Jingyan for a total amount of RMB 6,000 4.45 4,020 Jingyan’s investments are focused in the consulting services of corporate management, business information, exhibition, media and telecommunications sectors. Jingyan is scheduled to be in existence until the fifth anniversary of the Initial Contribution Date, unless terminated sooner or extended in accordance with the amended and restated limited partnership agreement. In December 2016, the Group and zPark Capital II ,L.P. (“zPark”) entered into a subscription agreement, whereby the Group agreed to purchase 2% limited partnership interest in zpak for a total amount of US$ 1,000 1.78 zPark’s investment strategy is primarily to make venture capital investments, principally by investing in and holding equity and equity-oriented securities of privately held early-stage technology companies, with an emphasis on companies with a connection to China, Japan and other Asia markets. The general purposes of zPark are to buy, hold, sell and otherwise invest in Securities, whether readily marketable or not; to exercise all rights, powers, privileges and other incidents of ownership or possession with respect to Securities held or owned by zPark; to enter into, make and perform all contracts and other undertakings. zPark is scheduled to be in existence until the tenth anniversary of the Initial Contribution Date, unless terminated sooner or extended in accordance with the amended and restated limited partnership agreement. Equity method investments Private company In April 2015, the Group acquired approximately 19 5,500 608 93 Publicly listed company On June 6, 2017, the Company acquired from Melco LottVentures Holdings Limited an aggregate of 1,278,714,329 Interactive 40.65 322.2 41.3 0.252 Loto Interactive is principally engaged in the provision of lottery-related technologies, systems and solutions to two state-run lottery operators in China, namely the China Welfare Lottery Issuance Centre and China Sports Lottery Administration Centre (“CSLA”). Loto Interactive is a distributor of high quality, versatile lottery terminals and parts for CSLA, which is the exclusive sports lottery operator in China. Loto Interactive provides game upgrading technology and system maintenance service for the rapid-draw game “Shi Shi Cai” in Chongqing Municipality. The Group’s proportionate share of Loto Interactive’s net loss recognized in the Statements of Comprehensive loss was RMB 2,469 379 Limited partnership In April 2015, the Group and Guangda Sports Culture Capital L.P (“Guangda Sports Culture”) entered into a subscription agreement, whereby the Group agreed to purchase 9.9 20,000 Guangda Sports Culture’s investment strategy is primarily to invest in emerging companies operating in the PRC. Guangda Sports Culture’s investments are focused in the sports sectors. Guangda Sports Culture is scheduled to be in existence until February 9, 2018, unless terminated sooner or extended in accordance with the amended and restated limited partnership agreement. The Group’s proportionate share of Guangda’s net income recognized in earnings was RMB 341 52 In Feb 2017, the Group and Sparkland Venture Capital Growth Fund L.P (“Sparkland”) entered into a subscription agreement, whereby the Group agreed to purchase 6.67 1,000 All of these above-mentioned investments were classified as equity method investments as the Group does have significant influence over the entities. For the year ended December 31, 2017, the Group recognized an impairment accounted RMB 28,781 4,424 Interactive 2,128 327 Available-for-sale investments In April 2016, the Group acquired 37,500 ADS of the share capital of Yintech Investment Holdings Limited (“Yintech”), a listed company on NASDAQ, for a cash consideration of US$ 506 118

ACCOUNTS RECEIVABLE

ACCOUNTS RECEIVABLE	12 Months Ended
	Dec. 31, 2017
ACCOUNTS RECEIVABLE [Abstract]
ACCOUNTS RECEIVABLE	6. ACCOUNTS RECEIVABLE As of As of As of RMB RMB US$ Accounts receivable 19,847 19,847 3,050 Less: Allowance for doubtful accounts (19,847) (19,847) (3,050) Accounts receivable, net - - - After voluntary suspension since April 2015, considering age of these receivables and after exhausting all collection efforts, the Group believes that the collection of the amount is no longer probable. The Group wrote off all of the outstanding accounts receivable at the end of year 2015.

PREPAYMENTS, OTHER RECEIVABLES

PREPAYMENTS, OTHER RECEIVABLES AND DEPOSITS	12 Months Ended
	Dec. 31, 2017
PREPAYMENTS, OTHER CURRENT ASSETS AND DEPOSITS [Abstract]
PREPAYMENTS, OTHER RECEIVABLES AND DEPOSITS	7. PREPAYMENTS, OTHER RECEIVABLES AND DEPOSITS Prepayments and other receivables consist of the following: As of As of As of RMB RMB US$ Receivables from third party payment service providers 13,450 1,893 291 Interest receivables 4,882 1,158 178 Deposit for share repurchase * 16,557 13,318 2,047 Receivables of remaining consideration ** 71,820 - - Deferred sponsorship and advertising expenses - 3,673 565 Prepaid insurance - 5,344 821 Deferred expense*** - 15,063 2,315 Receivables for disposal of long-term investments**** - 9,322 1,432 Others 18,825 24,278 3,730 125,534 74,049 11,379 * Deposit for share repurchase represents cash paid in advance by the Group under the share repurchase program commenced in 2015. The Group has received this deposit in Feb 2018. ** Receivables of remaining consideration represent the remaining cash consideration relating to the disposal of equity interest in Sumpay.cn as of December 31, 2016, which has been fully collected in March 2017. *** Deferred expense represents cash paid in advance to vendors, such as consultant expense, marketing promotion expense and platform fee, which would be amortized according to their respective service periods. **** Receivables for disposal of long-term investment represent the receivables from the disposal of Caiyu and Xibianyuan as of December 31, 2017. In March 2018, the amount related to the disposal of Xibianyuan has been fully collected. Deposits consist of the following: As of As of As of RMB RMB US$ Deposits for office leases and others 5,810 5,764 886

PROPERTY AND EQUIPMENT, NET

PROPERTY AND EQUIPMENT, NET	12 Months Ended
	Dec. 31, 2017
PROPERTY AND EQUIPMENT, NET [Abstract]
PROPERTY AND EQUIPMENT, NET	8. PROPERTY AND EQUIPMENT, NET As of As of As of RMB RMB US$ Electronics and office equipment 37,846 44,011 6,764 Motor vehicles 11,783 12,828 1,972 Leasehold improvements 49,045 106,904 16,431 Property and equipment, cost 98,674 163,743 25,167 Less: Accumulated depreciation (44,739) (56,752) (8,723) Property and equipment, net 53,935 106,991 16,444 Depreciation expenses were approximately RMB 10,209 12,865 13,400 2,060

INTANGIBLE ASSETS, NET

INTANGIBLE ASSETS, NET	12 Months Ended
	Dec. 31, 2017
INTANGIBLE ASSETS, NET [Abstract]
INTANGIBLE ASSETS, NET	INTANGIBLE ASSETS, NET As of As of As of RMB RMB US$ Cost: Computer software 3,576 24,649 3,788 License agreement 800 152,277 23,405 Mobile applications 60,200 60,200 9,253 Internet domain name 2,861 3,023 465 Brand name - 86,041 13,224 67,437 326,190 50,135 Accumulated amortization: Computer software (2,320) (8,059) (1,239) License agreement (800) (8,059) (1,239) Mobile applications (1,188) (13,228) (2,033) Internet domain name (1,582) (1,814) (279) Brand name - (3,944) (606) (5,890) (35,104) (5,396) Intangible assets, net 61,547 291,086 44,739 Amortization expenses were approximately RMB 1,361 6,846 26,102 4,012 RMB US$ 2018 41,760 6,418 2019 41,281 6,345 2020 38,981 5,991 2021 36,749 5,648 2022 and thereafter 132,315 20,337 291,086 44,739

ACCRUED EXPENSES AND OTHER CURR

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	12 Months Ended
	Dec. 31, 2017
Payables and Accruals [Abstract]
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES As of As of As of RMB RMB US$ Advance from end users* 34,388 35,888 5,516 Business tax and other taxes payable 3,280 4,118 634 Deferred government grant 5,018 2,807 431 Professional fees payable 15,136 12,039 1,850 Promotional events payables 7,921 8,120 1,248 Decoration payables** - 5,328 819 Unpaid consideration for business combination*** 104,490 54,550 8,384 Others 13,922 29,487 4,532 184,155 152,337 23,414 * Advance from end users represents payments received by the Group in advance from the end users prior to the services provided. ** Decoration payables represent the decoration expenses accrued including office furniture mainly for the new office building rented in Nanshan district, Shenzhen, which became formally functional in December 2017. *** Unpaid consideration for business combination represents the unpaid cash consideration and contingent consideration relating to the acquisition of Qufan as of December 31, 2017. On February 9, 2018, the Company announced that it has disposed of its 51 127,500 54,550

ACCUMULATED DEFICIT AND STATUTO

ACCUMULATED DEFICIT AND STATUTORY RESERVE	12 Months Ended
	Dec. 31, 2017
ACCUMULATED DEFICIT AND STATUTORY RESERVE [Abstract]
ACCUMULATED DEFICIT AND STATUTORY RESERVE	11. ACCUMULATED DEFICIT AND STATUTORY RESERVE The Company’s ability to pay dividends is primarily dependent on the Company receiving distributions of funds from its subsidiaries. Relevant PRC statutory laws and regulations permit payments of dividends by the Group’s PRC subsidiary only out of its retained earnings, if any, as determined in accordance with PRC accounting standards and regulations. The results of operations reflected in the financial statements prepared in accordance with U.S. GAAP differ from those reflected in the statutory financial statements of the Company’s PRC subsidiary. In accordance with the Regulations on Enterprises with Foreign Investment of China and its Articles of Association, the Company’s PRC subsidiary, E-Sun Sky Computer and Qufan Information Technology enterprises and Qufan Information Technology are 10 their 50 their In accordance with the China Company Laws, the Company’s VIEs are PRC domestic companies (i.e. E-Sun Network, E-Sun Sky Network, Youlanguang Technology, Guangtiandi Technology, Guangyi Network, Tongfu Technology, 500 10 The general reserve fund and statutory surplus fund are restricted to set-off against losses, expansion of production and operation and increasing registered capital of the respective company. The staff welfare and bonus fund and statutory public welfare fund are restricted to the capital expenditures for the collective welfare of employees. The reserves are not allowed to be transferred to the Company in terms of cash dividends, loans or advances, nor are they available for distribution except under liquidation. As of As of As of RMB RMB US$ PRC statutory reserved funds 30,224 30,882 4,746 Unreserved accumulated deficit (568,552) (888,633) (136,580) (538,328) (857,751) (131,834) Under PRC laws and regulations, there are restrictions on the Company’s PRC subsidiary and VIEs with respect to transferring certain of their net assets to the Company either in the form dividends, loans, or advances. Amounts restricted include paid-in capital, statutory reserve funds and retained earnings of the Company’s PRC subsidiary and VIEs, as determined pursuant to PRC generally accepted accounting principles, totaling approximately RMB 317,894 48,859 Furthermore, cash transfers from the Company’s PRC subsidiary to its subsidiaries outside of China are subject to PRC government control of currency conversion. Shortages in the availability of foreign currency may restrict the ability of the PRC subsidiary and consolidated affiliated entities to remit sufficient foreign currency to pay dividends or other payments to the Company, or otherwise satisfy their foreign currency denominated obligations.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2017
INCOME TAXES [Abstract]
INCOME TAXES	INCOME TAXES Cayman Islands Under the current laws of the Cayman Islands, the Company is not subject to tax on income or capital gains. In addition, upon payments of dividends by the Company to its shareholders, no Cayman Islands withholding tax will be imposed. USA 500.com USA is incorporated in the USA and does not conduct any substantive operations of its own. No provision for USA income tax has been made in the financial statements as 500.com USA had no assessable income for the years ended December 31, 2015, 2016 and 2017. British Virgin Islands Under the current laws of the British Virgin Islands, BVI is not subject to tax on income or capital gains. United Kingdom 500.com UK is incorporated in the UK and does not conduct any substantive operations of its own. No provision for UK income tax has been made in the financial statements as 500.com UK had no assessable income for the year ended December 31, 2016 and 2017. Curacao Under the current laws, profits tax in Curacao is generally assessed at the rate of 2 Malta Under the current laws, profits tax in Malta is generally assessed at the rate of 35 5 Cyprus Round Spot Services Ltd is incorporated in Cyprus and does not conduct any substantive operations of its own. No provision for Cyprus income tax has been made in the financial statements as Round Spot Services Ltd had no assessable income for the year ended December 31, 2017. Australia Multilotto Australia PTY Ltd is incorporated in Australia and does not conduct any substantive operations of its own. No provision for Australia income tax has been made in the financial statements as Multilotto Australia PTY Ltd had no assessable income for the year ended December 31, 2017. Hong Kong Under the current laws, profits tax in Hong Kong is generally assessed at the rate of 16.5 Japan 500.com Nihon Co., Ltd is incorporated in Japan in July 2017 and does not conduct any substantive operations of its own. No provision for Japan income tax has been made in the financial statements as 500.com Nihon Co., Ltd had no assessable income for the year ended December 31, 2017. People’s Republic of China A new enterprise income tax law (the “EIT Law”) in the PRC was enacted and became effective on January 1, 2008. The EIT Law applies a uniform 25 25 25 In October 2011, E-Sun Sky Network obtained the certificate of “High-tech Enterprise” and was granted a preferential income tax rate of 15 15 10 15 In March 2011, E-Sun Sky Computer obtained the certificate of “Software Enterprise”, and was granted an exemption of EIT for its first two years of operations and a half reduction in tax rate for the succeeding three years commencing from the first profit-making year. 2011 was the first year of EIT exemption for E-Sun Sky Computer. In November 2015, E-Sun Sky Computer obtained the certificate of “High-tech Enterprise” and was granted a preferential income tax rate of 15 12.5 25 In June 2013, Guangtiandi Technology obtained the certificate of “Software Enterprise”, and was granted an exemption of EIT for its first two years of operations and a half reduction in tax rate for the succeeding three years commencing from the first profit-making year. 2013 and 2014 was the first two years of EIT exemption for Guangtiandi Technology. Guangtiandi Technology is subject to EIT at the rate of 12.5 12.5 12.5 Lhasa Yicai was established in Tibet in 2014 and qualified as a “Western Area Encouraged Industry”. According to local government policy, qualified entities were granted a preferential tax rate of 15 15 In March 2017, Shenzhen Qufan obtained the certificate of “Software Enterprise”, and was granted an exemption of EIT for its first two years of operations and a half reduction in tax rate for the succeeding three years commencing from the first profit-making year. 2015 was the first year of EIT exemption for Shenzhen Qufan. Thus, Shenzhen Qufan was exempt from paying income tax in both 2015 and 2016 and was subject to the reduced income tax rate of 12.5 4,399 676 702 0.01 0.002 (Loss)/income before income taxes consists of: 2015 2016 2017 2017 RMB RMB RMB US$ Cayman Islands (163,416) (179,348) (163,239) (25,089) British Virgin Islands - (31) (3) - USA (2,320) (3,809) (4,703) (723) Hong Kong (1,470) (10,524) (10,929) (1,680) Japan - - (174) (27) Malta - - (4,321) (664) Curacao - - 7,449 1,145 Cyprus - - (13) (2) Australia - - - - PRC (115,034) (12,483) (152,575) (23,451) (282,240) (206,195) (328,508) (50,491) The current and deferred components of the income tax expense appearing in the consolidated statements of comprehensive (loss) income are as follows: 2015 2016 2017 2017 RMB RMB RMB US$ Current tax (expense) benefit (1,890) (3,553) 12,771 1,963 Deferred tax (expense) benefit (40,079) 496 (405) (62) Income tax (expense) benefit (41,969) (3,057) 12,366 1,901 The reconciliation of tax computed by applying the statutory income tax rate applicable to PRC operations to income tax (benefit) expense is as follows: 2015 2016 2017 2017 RMB RMB RMB US$ Income (loss) before income taxes (282,240) (206,195) (328,508) (50,491) Income tax computed at applicable tax rates (25%) (70,560) (51,549) (82,127) (12,623) Effect of different tax rates in different jurisdictions 1,206 4,743 693 107 Non-deductible expenses 47,324 54,588 87,632 13,468 Effect of tax rate changes (24,125) (1,841) - - Change in valuation allowance 88,661 (5,144) - - Changes in interest and penalties on unrecognized tax benefits 3,920 3,105 5,098 784 Effect of EIT reversal for previous years (2,099) 2,760 (19,704) (3,028) Research and development super-deduction (2,363) (2,947) (1,364) (210) Others 5 (658) (2,594) (399) 41,969 3,057 (12,366) (1,901) A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: 2015 2016 2017 2017 RMB RMB RMB US$ Balance at beginning of year 38,901 42,983 38,457 5,911 Increase relating to current year tax positions 7,496 3,630 5,194 798 Decrease relating to prior year tax positions (1,119) (3,204) (1,595) (245) Decrease relating to expiration of applicable statute of limitations (2,295) (4,952) (17,758) (2,729) Balance at end of year 42,983 38,457 24,298 3,735 The Group recognizes interest accrued related to unrecognized tax benefits in taxation expenses. During the years ended December 31, 2015, 2016 and 2017, the Group recognized approximately RMB 4,534 4,932 5,098 784 614 1,827 7,667 1,178 6,884 9,989 7,420 1,140 2014 2017 The components of deferred taxes are as follows: 2016 2017 2017 RMB RMB US$ Deferred tax assets, non-current portion Advertising expenditure deductible in future years 58,654 61,191 9,405 Deferred revenue - 982 151 Deferred government grants 2,417 2,417 371 Loss from equity method investment 203 203 31 Bad debt provision 4,962 5,097 783 Accrued rental expense 817 817 126 Impairment loss 1,250 1,250 192 Net operating losses (“NOLs”) 16,411 34,700 5,333 Less: valuation allowance (84,714) (106,657) (16,392) Total deferred tax assets, non-current portion - - - Deferred tax liabilities, non-current portion Apps and other licenses arisen from business combination (14,902) (19,475) (2,993) Total deferred tax liabilities, non-current portion (14,902) (19,475) (2,993) The Group records a valuation allowance on its deferred tax assets that is sufficient to reduce the deferred tax assets to an amount that is more likely than not to be realized. Future reversal of the valuation allowance will be recognized either when the benefit is realized or when it has been determined that it is more likely than not that the benefit in future earnings will be realized. As of December 31, 2017, the Group had NOLs of approximately RMB 226,617 34,830 2018 2022 The cumulative amount of the temporary differences in respect of investments in foreign subsidiaries is RMB 448,176 255,333 39,244 44,818 25,533 3,924

EMPLOYEE DEFINED CONTRIBUTION P

EMPLOYEE DEFINED CONTRIBUTION PLAN	12 Months Ended
	Dec. 31, 2017
EMPLOYEE DEFINED CONTRIBUTION PLAN [Abstract]
EMPLOYEE DEFINED CONTRIBUTION PLAN	EMPLOYEE DEFINED CONTRIBUTION PLAN Full time employees of the Group in PRC participate in a government mandated defined contribution plan, pursuant to which certain pension benefits, medical care, employee housing fund and other welfare benefits are provided to employees. Chinese labor regulations require that the PRC subsidiary and VIEs of the Group make contributions to the government for these benefits based on certain percentages of the employees’ salaries. The Group has no legal obligation for the benefits beyond the contributions made. Such employee benefits, which were expensed as incurred, amounted to approximately RMB 12,587 15,591 14,160 2,176

SHARE-BASED PAYMENT

SHARE-BASED PAYMENT	12 Months Ended
	Dec. 31, 2017
SHARE-BASED PAYMENT [Abstract]
SHARE-BASED PAYMENT	14. SHARE-BASED PAYMENT On March 28, 2011, the shareholders and board of directors of the Company approved the 2011 Share Incentive Plan (the “Plan”). The Plan provides for the grant of options, restricted shares and other share-based awards. These options were granted with exercise prices denominated in US$, which is the functional currency of the Company. The board of directors has authorized under the Plan the issuance of up to 12 On April 8, 2011, the Company granted 13,864,000 0.40 5,506,600 5,225,800 1,565,800 1,565,800 On April 8, 2011, the Company granted 5,003,980 12,600,000 0.40 On October 22, 2013, the Company granted 2,660,000 0.40 600,000 1,620,000 220,000 220,000 On June 19, 2014, the Company granted 2,000,000 32,561,800 3.232 32.32 666,690 666,690 666,620 5,437,820 10,843,080 On June 29, 2015, the Company granted 200,000 2.55 66,670 66,670 66,660 On January 5, 2016, the Company granted 2,500,000 2.00 750,000 750,000 1,000,000 On January 6, 2016, the Company granted 600,000 1.851 On January 16, 2016, the Company granted 15,900,000 1.743 2,650,000 5,300,000 7,950,000 On December 16, 2016, the Company granted 600,000 1.35 On August 15, 2017, the Company granted 12,230,280 4,035,994 4,035,994 4,158,292 On November 22, 2017, the Company granted 350,000 A summary of share option and restricted shares activity and related information for the year ended December 31, 2017 is as follows: Number of Weighted Weighted Weighted Aggregated US$ US$ (Years) US$’000 Outstanding, January 1, 2017 55,382,320 1.70 1.12 2.65 Granted - - - - Forfeited (12,500,000) 1.79 0.90 Exercised (894,760) 1.22 1.28 Outstanding, December 31, 2017 41,987,560 1.04 1.18 1.59 3,986 Vested and expected to vest at December 31, 2017 41,762,129 1.05 1.19 1.51 3,803 Exercisable at December 31, 2017 37,006,200 0.95 1.22 1.53 3,986 Number of Weighted Weighted Aggregated US$ (Years) US$’000 Outstanding, January 1, 2017 - Granted 12,580,280 0.96 9.63 12,719 Forfeited - Exercised - Outstanding, December 31, 2017 12,580,280 0.96 9.63 12,719 Vested and expected to vest at December 31, 2017 12,580,280 0.96 9.63 12,719 Exercisable at December 31, 2017 - The aggregate intrinsic value in the table above represents the difference between the fair value of Company’s common share as of December 31, 2017 and the exercise price. Total intrinsic value of options granted to employees and directors exercised for the years ended December 31, 2015, 2016 and 2017 were RMB 49,625 11,051 479 74 On June 8, 2012 (the “First Modification Date”), the Company modified the exercise price of both vested and unvested 13,740,000 88 0.4 0.2 In accordance with ASC 718, the effects of a modification resulted in incremental compensation cost of US$ 670 3,460 2,790 The total compensation cost measured at the First Modification Date was US$ 2,214 1,544 The incremental compensation cost of US$ 178 2,036 On March 19, 2015 (the “Second Modification Date”), the Company modified the exercise price of the share options granted on June 19, 2014 from US$ 3.232 32.32 1.00 10.00 In accordance with ASC 718, the effects of a modification resulted in incremental compensation cost of US$ 11,197 15,390 4,193 The total compensation cost measured at the Second Modification Date was US$ 39,829 28,632 The incremental compensation cost of US$ 213 39,616 On July 19, 2017 (the “Third Modification Date”), the Company extended the maturity date of the remaining unexercised share options granted on July 19, 2014 from July 19, 2017 to July 19, 2018. The modification was intended to provide additional incentives for these employees. In accordance with ASC 718, the effects of a modification resulted in incremental compensation cost of US$ 55 2,828,620 The incremental compensation cost of US$55 for unexercised options is being amortized on an accelerated basis over the extending term of the original award from July 19, 2017 to July 19, 2018. As of December 31, 2017, there was RMB 7,079 1,088 1.1 As of December 31, 2017, there was RMB 78,902 12,127 9.6 As the share options granted to the consultants were fully vested at the grant date, the related compensation expenses were fully recognized in the consolidated statement of comprehensive income (loss) at the grant date. The fair value of share options was determined using the binomial option valuation model, with the assistance from an independent third-party appraiser. The binomial model requires the input of highly subjective assumptions, including the expected share price volatility and the suboptimal early exercise factor. For expected volatilities, the Company has made reference to historical volatilities of several comparable companies. The sub-optimal early exercise factor was estimated based on the vesting and contractual terms of the awards and management’s expectation of exercise behavior of the grantees. The risk-free rate for periods within the contractual life of the options is based on market yield of U.S. Treasury Bond in effect at the time of grant. The assumptions used to estimate the fair value of the share options granted are as follows: For the years ended December 31 2015 2016 2017 Expected volatility 51.96 56.23 % 70.80 77.52 % 54.83 % Risk-free interest rate 1.06 1.64 % 1.13 1.62 % 1.20 % Dividend yield 0.00 % 0.00 % 0.00 % Forfeiture rate 0.00 % 0.00 % 0.00 % Suboptimal early exercise factor 2.8 2.2 2.8 2.2 The fair value of restricted shares was determined using the market price of the ordinary shares of the Company on the grant date. The total fair value of the vested equity share options granted to the employees and directors during the years ended December 31, 2015, 2016 and 2017 were RMB 63,200 127,333 157,956 24,277 There were no vested restricted shares granted to the employees and directors during the year ended December 31, 2017. The exercise price of share options granted during the year of 2016 equalled the market price of the ordinary shares on the grant date. No share options were granted during the year ended December 31, 0.89 The Company granted restricted shares to employees and directors during the year ended December 31, 0.96 Total share-based compensation expenses relating to options granted to employees and directors for the years ended December 31, 2015, 2016 and 2017 are included in: For the year ended December 31, 2015 Employees Directors Total Total RMB RMB RMB US$ Cost of services 3,052 - 3,052 471 Sales and marketing 13,771 - 13,771 2,126 General and administrative 109,940 9,062 119,002 18,371 Service development expenses 22,804 - 22,804 3,520 149,567 9,062 158,629 24,488 For the year ended December 31, 2016 Employees Directors Total Total RMB RMB RMB US$ Cost of services 2,993 - 2,993 431 Sales and marketing 13,966 - 13,966 2,012 General and administrative 114,244 7,114 121,358 17,479 Service development expenses 25,024 - 25,024 3,604 156,227 7,114 163,341 23,526 For the year ended December 31, 2017 Employees Directors Total Total RMB RMB RMB US$ Cost of services 1,343 - 1,343 206 Sales and marketing 9,228 - 9,228 1,418 General and administrative 61,113 3,089 64,202 9,868 Service development expenses 16,370 - 16,370 2,516 88,054 3,089 91,143 14,008

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2017
COMMITMENTS AND CONTINGENCIES [Abstract]
COMMITMENTS AND CONTINGENCIES	15. COMMITMENTS AND CONTINGENCIES RMB US$ 2018 30,217 4,644 2019 28,154 4,327 2020 24,630 3,786 83,001 12,757 Payments under operating leases are expensed on a straight-line basis over the periods of their respective leases. The Group’s lease arrangements have no renewal options, rent escalation clauses, restrictions or contingent rents and are all conducted with third parties. For the years ended December 31, 2015, 2016 and 2017, total rental expenses for all operating leases amounted to approximately RMB 4,013 11,421 29,170 4,483 Uncertain Income tax position As of December 31, 2016 and 2017, the Group has recognized approximately RMB 38,457 24,298 3,735 Variable interest entity structure In the opinion of management, (i) the ownership structure of the Company and its VIEs are in compliance with existing PRC laws and regulations; (ii) the contractual arrangements with the VIEs and their shareholders are valid and binding, and will not result in any violation of PRC laws or regulations currently in effect; and (iii) the Group’s business operations are in compliance with existing PRC laws and regulations in all material respects. However, there are substantial uncertainties regarding the interpretation and application of current and future PRC laws and regulations. Accordingly, the Company cannot be assured that PRC regulatory authorities will not ultimately take a contrary view to its opinion. If the current ownership structure of the Group and its contractual arrangements with VIEs are found to be in violation of any existing or future PRC laws and regulations, the Group may be required to restructure its ownership structure and operations in the PRC to comply with the changing and new PRC laws and regulations. In the opinion of management, the likelihood of loss in respect of the Group’s current ownership structure or the contractual arrangements with VIEs is remote based on current facts and circumstances. Contractual Arrangements among the Company and the VIEs Under applicable PRC tax laws and regulations, arrangements and transactions among related parties may be subject to audit or scrutiny by the PRC tax authorities within ten years after the taxable year when the arrangements or transactions are conducted. The Company could face material and adverse tax consequences if the PRC tax authorities were to determine that the Contractual Arrangements among the Company and the respective VIEs were not entered into on an arm’s-length basis and therefore constituted unfavorable transfer pricing arrangements. Unfavorable transfer pricing arrangements could, among other things, result in an upward adjustment on taxation. In addition, the PRC tax authorities may impose interest on late payments on the Company and the respective VIEs for the adjusted but unpaid taxes. In the opinion of management, the likelihood of such an upward adjustment on taxation and related interest is remote based on current facts and circumstances. Guarantees The Group accounts for guarantees in accordance with ASC topic 460 (“ASC 460”), Guarantees The memorandum and articles of association of the Company require that the Company indemnify its officers and directors, as well as those who act as directors and officers of other entities at the Company’s request, against expenses, judgments, fines, settlements and other amounts actually and reasonably incurred in connection with any proceedings arising out of their services to the Company. The indemnification obligations are more fully described in the memorandum and articles of association. The Company purchases standard directors and officers insurance to cover claims or a portion of the claims made against its directors and officers. Since a maximum obligation is not explicitly stated in the Company’s memorandum and articles of association and will depend on the facts and circumstances that arise out of any future claims, the overall maximum amount of the obligations cannot be reasonably estimated. Historically, the Group has not been required to make payments related to these obligations, and the fair value for these obligations is zero as of December 31, 2016 and 2017. Indemnity Cost On September 12, 2016, the Group entered into an agreement, approved by the U.S. District Court to settle outstanding legal proceedings relating to a stockholder class action lawsuit during the period between November 22, 2013 and February 25, 2015 for USD 2,500 1,500 1,000

LOSSES PER SHARE

LOSSES PER SHARE	12 Months Ended
	Dec. 31, 2017
EARNINGS PER SHARE [Abstract]
EARNINGS PER SHARE	16. LOSSES PER SHARE For the years ended 2015 2016 2017 RMB RMB RMB RMB RMB US$ RMB US$ Class A Class B Class A Class B Class A Class A Class B Class B Losses per share—basic: Numerator: Allocation of net loss attributable to 500.com Limited’s ordinary shareholders used in calculating income per ordinary share—basic (247,664) (76,233) (166,057) (36,908) (259,319) (39,857) (57,780) (8,880) Denominator: Weighted average number of ordinary shares outstanding used in calculating basic losses per share 294,836,665 90,753,548 339,429,946 75,442,810 333,909,823 333,909,823 74,400,299 74,400,299 Denominator used for losses per share 294,836,665 90,753,548 339,429,946 75,442,810 333,909,823 333,909,823 74,400,299 74,400,299 Losses per share—basic (0.84) (0.84) (0.49) (0.49) (0.78) (0.12) (0.78) (0.12) Losses per share—diluted: Numerator: Allocation of net loss attributable to 500.com Limited’s ordinary shareholders used in calculating loss per ordinary share— diluted (247,664) (76,233) (166,057) (36,908) (259,319) (39,857) (57,780) (8,880) Reallocation of net loss attributable to 500.com Limited’s ordinary shareholders as a result of conversion of Class B to Class A shares (76,233) - (36,908) - (57,780) (8,880) - - Net loss attributable to ordinary shareholders (323,897) (76,233) (202,965) (36,908) (317,099) (48,737) (57,780) (8,880) Denominator: Weighted average number of ordinary shares outstanding used in calculating basic losses per share 294,836,665 90,753,548 339,429,946 75,442,810 333,909,823 333,909,823 74,400,299 74,400,299 Conversion of Class B to Class A ordinary shares 90,753,548 - 75,442,810 - 74,400,299 74,400,299 - - Share options - - — - - - - - Denominator used for losses per share 385,590,213 90,753,548 414,872,756 75,442,810 408,310,122 408,310,122 74,400,299 74,400,299 Losses per share—diluted (0.84) (0.84) (0.49) (0.49) (0.78) (0.12) (0.78) (0.12) Losses per ADS: Denominator used for losses per ADS - basic 29,483,667 - 33,942,995 - 33,390,982 33,390,982 - - Denominator used for losses per ADS - diluted 38,599,021 - 41,487,276 - 40,831,012 40,831,012 - - Losses per ADS – basic (8.40) - (4.89) - (7.77) (7.77) - - Losses per ADS – diluted (8.40) - (4.89) - (7.77) (7.77) - -

EQUITY TRANSACTIONS

EQUITY TRANSACTIONS	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	17. EQUITY TRANSACTIONS Upon completion of the Company’s IPO in November 2013, the Company’s ordinary shares were converted into 66,539,000 231,428,220 The Memorandum and Articles of Association were amended and restated such that the authorized share capital consisted of 1,000,000,000 0.00005 700,000,000 300,000,000 Additionally, the Company issued 19,230,769 11,538,462 15,000 66,539,000 262,197,451 In 2014, 22,742,660 0.2 0.4 22,742,660 0.00005 8,107 254,844,582 96,634,529 In 2015, 5,274,480 0.2 1.0 5,274,480 0.00005 2,960 63,500,500 123,391 1,220,000 1,434 334,034,932 84,999,159 In 2016, 2,276,320 0.2 1.0 2,276,320 0.00005 2,032 11,415,320 17,240 335,494,792 74,400,299 In 2017, 894,760 0.2 1.0 894,760 0.00005 831 2,602,000 2,999 333,787,552 74,400,299

FAIR VALUE MEASUREMENT

FAIR VALUE MEASUREMENT	12 Months Ended
	Dec. 31, 2017
FAIR VALUE MEASUREMENT [Abstract]
FAIR VALUE MEASUREMENT	18. FAIR VALUE MEASUREMENT In accordance with ASC 820-10, the Group measures available-for-sale investments, contingent consideration payable at fair value on a recurring basis. The fair value of the available-for-sale investments are measured based on the market price in an active market. The Group measures certain financial assets, including cost method investments, at fair value on a nonrecurring basis only if an impairment charge were to be recognized. The Group’s non-financial assets, such as intangible assets and fixed assets, would be measured at fair value only if they were determined to be impaired on an other-than-temporary basis. Fair value measurement Total fair Quoted Significant other Significant Total RMB RMB RMB RMB RMB Fair value disclosure Cash equivalents Fixed-rate investments 312,165 - 312,165 - - Adjustable-rate investments 223,000 - 223,000 - - Time deposits 804,692 - 804,692 - - Total 1,339,857 - 1,339,857 - - Fair value measurement Recurring Short-term investments Structured deposit (Note 5) 100,000 - 100,000 - - Available-for-sale investments 4,266 4,266 - - - Non-recurring Long-term investments - - - - (3,583) Total assets measured at fair value 104,266 4,266 100,000 - (3,583) Fair value measurement Recurring Contingent consideration payable 52,240 - - 52,240 - Total liabilities measured at fair value 52,240 - - 52,240 - Assets and liabilities measured or disclosed at fair value are summarized below: Fair value measurement Total fair Quoted prices Significant Significant Total losses RMB US$ RMB RMB RMB RMB US$ Fair value disclosure Cash equivalents Fixed-rate investments 289,304 44,465 - 289,304 - - - Adjustable-rate investments 189,604 29,142 - 189,604 - - - Time deposits - - - - - - - Total 478,908 73,607 - 478,908 - - - Fair value measurement Recurring Short-term investments Structured deposit (Note 5) 120,000 18,444 - 120,000 - - - Available-for-sale investments - - - - - 733 113 Non-recurring Long-term investments - - - - - 28,781 4,424 Total assets measured at fair value 120,000 18,444 - 120,000 - 29,514 4,537 Fair value measurement Recurring Contingent consideration payable 54,550 8,384 - - 54,550 2,384 366 Total liabilities measured at fair value 54,550 8,384 - - 54,550 2,384 366 There were no transfers of fair value measurements into or out of Level 3 for the years ended December 31, 2015, 2016 and 2017. The Group has measured the contingent consideration payable at fair value on a recurring basis using significant unobservable inputs (Level 3) as of the years ended December 31, 2017. The significant unobservable inputs used in the fair value measurement and the corresponding impacts to the fair values are presented below: Valuation Unobservable Estimation as of Change in Change in fair value Contingent consideration payable Monte Carlo simulation technique Spot value of net income 31,698 Increase / (decrease) Increase / (decrease) Volatility of net income 10.00 % Increase / (decrease) (Decrease) / increase Expected annual growth rate of net income 0.00 % Increase / (decrease) Increase / (decrease) Discount factor 0.95 Increase / (decrease) (Decrease) / increase The following table presents a reconciliation of liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the year ended December 31, 2017: Contingent consideration payable RMB Balance as of December 31, 2015 - Recognized during the year 52,240 Balance as of December 31, 2016 52,240 Recognized during the year 2,310 Balance as of December 31, 2017 54,550 Balance as of December 31, 2017 in US$ 8,384

SEGMENT REPORTING

SEGMENT REPORTING	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
SEGMENT REPORTING	19. SEGMENT REPORTING The Group engages primarily in the online lottery purchase services, online mobile gaming and information services in the PRC. After acquiring the business of online lottery betting and online casino platforms generated from the Multi Group, the Group distinguishes revenues, costs and expenses between different geographic operating segment in its internal reporting, and reports costs and expenses by nature in different geographic operating segments. In accordance with ASC topic 280, “ Segment Reporting” For the years ended December 31, 2016 PRC Europe Total RMB RMB RMB Net Revenues 10,928 - 10,928 Depreciation and Amortization 19,711 - 18,995 Operating (loss) (366,562) - (366,562) Interest income 23,859 - 23,859 Interest expense - - - Income tax expense 3,057 - 3,057 Segment net (loss) (209,252) - (209,252) Segment assets 2,076,892 - 2,076,892 For the years ended December 31, 2017 PRC Europe Total Total RMB RMB RMB US$ Net Revenues 81,953 49,370 131,323 20,184 Depreciation and Amortization 37,158 2,344 39,502 6,071 Operating (loss) income (353,623) 2,755 (350,868) (53,928) Interest income 20,574 - 20,574 3,162 Interest expense - - - - Income tax expense (benefit) (12,522) 156 (12,366) (1,901) Segment net (loss) income (319,101) 2,959 (316,142) (48,590) Segment assets 1,696,024 58,535 1,754,559 269,669

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	12 Months Ended
	Dec. 31, 2017
SUBSEQUENT EVENTS [Abstract]
SUBSEQUENT EVENTS	20. SUBSEQUENT EVENTS Disposal of Qufan Cayman and Shenzhen Qufan On February 9, 2018, the Company entered into a share disposal agreement with the founding shareholder of Qufan and disposed its 51 127.5 7,877 1,211 . For the years ended December 31 2016 2017 2017 RMB RMB US$ Pro forma total revenues 5,669 59,465 9,140 Pro forma net income 706 15,328 2,356 Pro forma net income attributable to 500.com Limited 360 7,817 1,201 Disposal of 500Fu In February 2018, the Company disposed its 100 6,933 1,066

CONDENSED FINANCIAL INFORMATION

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY	12 Months Ended
	Dec. 31, 2017
CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY [Abstract]
CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY	21. CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY Under PRC laws and regulations, the Company’s PRC subsidiary E-Sun Sky Computer and VIEs are restricted in their ability to transfer certain of its net assets to the Company in the form of dividend payments, loans and/or advances. The amounts restricted include paid up capital, retained earnings and statutory reserves, as determined pursuant to PRC generally accepted accounting principles, totaling RMB 317,894 48,859 Condensed balance sheets As of As of As of RMB RMB US$ ASSETS Current assets: Cash and cash equivalents 341,671 1,304 200 Time deposits 700,637 - - Other current assets 23,728 20,257 3,113 Amounts due from intergroup companies 194,117 400,659 61,580 Total current assets 1,260,153 422,220 64,893 Non-current assets: Investment in subsidiaries and VIEs 566,267 1,060,273 162,961 Property and equipment, net 343 241 37 Total non-current assets 566,610 1,060,514 162,998 TOTAL ASSETS 1,826,763 1,482,734 227,891 As of As of As of RMB RMB US$ LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Accrued payroll and welfare payable 43 544 84 Accrued expenses and other liabilities 112,548 68,015 10,453 Amounts due to intergroup companies 4,641 4,401 676 Total current liabilities 117,232 72,960 11,213 TOTAL LIABILITIES 117,232 72,960 11,213 Shareholders’ equity: Class A Ordinary shares, par value US$0.00005 per share, 700,000,000 shares authorized as of December 31, 2016 and 2017; 335,494,792 and 333,787,552 shares issued and outstanding as of December 31, 2016 and 2017, respectively 115 115 17 Class B Ordinary shares, par value US$0.00005 per share; 300,000,000 shares authorized as of December 31, 2016 and 2017; 74,400,299 and 74,400,299 shares issued and outstanding as of December 31,2016 and 2017, respectively 28 28 4 Additional paid-in capital 2,198,385 2,295,111 352,753 Treasury shares (123,258) (143,780) (22,099) Accumulated other comprehensive income 172,589 116,051 17,837 Accumulated deficit and statutory reserve (538,328) (857,751) (131,834) Total shareholder’s equity 1,709,531 1,409,774 216,678 TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY 1,826,763 1,482,734 227,891 Condensed statements of comprehensive income (loss) For the years ended December 31, 2015 2016 2017 2017 RMB RMB RMB US$ Net Revenues - - - - Operating expenses: Sales and marketing (330) (402) (497) (76) General and administrative (13,160) (15,934) (68,260) (10,491) Total operating expenses (13,490) (16,336) (68,757) (10,567) Indemnity cost - (9,979) - - Other operating income - 39 - - Operating loss (13,490) (26,276) (68,757) (10,567) Interest income 8,703 10,269 4,818 741 Equity in (loss) profits of subsidiaries and VIEs (319,110) (186,958) (253,160) (38,911) Loss before income tax (323,897) (202,965) (317,099) (48,737) Income tax benefit - - - - Net loss (323,897) (202,965) (317,099) (48,737) Other comprehensive income Foreign currency translation gain (loss) 66,851 82,347 (56,196) (8,637) Change in fair value of AFS - - (733) (113) Comprehensive loss (257,046) (120,618) (374,028) (57,487) Condensed statements of cash flows For the years ended December 31, 2015 2016 2017 2017 RMB RMB RMB US$ Net cash (used in) provided by operating activities (2,266) 25,679 (270,965) (41,647) Net cash (used in) provided by investing activities (865,971) 413,401 3,065 471 Net cash provided by (used in) financing activities 748,755 (118,484) (11,945) (1,836) Effect of exchange rate changes on cash and cash equivalents 46,328 481 (60,522) (9,302) Net (decrease) increase in cash and cash equivalents (73,154) 321,077 (340,367) (52,314) Cash and cash equivalents at beginning of the year 93,748 20,594 341,671 52,514 Cash and cash equivalents at end of the year 20,594 341,671 1,304 200 Basis of presentation Condensed financial information is used for the presentation of the Company, or the parent company. The condensed financial information of the parent company has been prepared using the same accounting policies as set out in the Group’s consolidated financial statements except that the parent company used the equity method to account for its investment in its subsidiaries and VIEs. The parent company records its investment in its subsidiaries and VIEs under the equity method of accounting as prescribed in ASC 323, “ Investments-Equity Method and Joint Ventures”. The parent company’s condensed financial information should be read in conjunction with the Group’s consolidated financial statements.

SUMMARY OF SIGNIFICANT ACCOUN28

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2017
Basis of presentation	Basis of presentation and use of estimates The accompanying consolidated financial statements have been prepared in accordance with United States Generally Accepted Accounting Principles (“U.S. GAAP”).
Changes in Presentation of Comparative Information	Changes in Presentation of Comparative Information Certain comparative amounts have been reclassified to conform with the current year’s presentation.
Principles of consolidation	Principles of consolidation The consolidated financial statements of the Group include the financial statements of the Company, its subsidiaries and VIEs in which it has a controlling financial interest. The results of the subsidiaries are consolidated from the date on which the Group obtained control and continue to be consolidated until the date that such control ceases. A controlling financial interest is typically determined when a company holds a majority of the voting equity interest in an entity. Furthermore, if the Company demonstrates that it has ability to control the VIEs through its rights to all the residual benefits of the VIEs and its obligation to fund losses of the VIEs then the entity is consolidated. All significant intercompany balances and transactions among the Company, its subsidiaries and VIEs have been eliminated on consolidation.
Convenience translation	Convenience translation Translations of amounts from RMB into US$ for the convenience of the reader were calculated at the noon buying rate of US$ 1.00 6.5063
Foreign currency translation	Foreign currency translation The functional currency of the Company, BVI, 500wan HK, 500.com UK, 500.com USA, 500.com JP, Qufan Cayman, Qufan HK is the US$. The functional currency of The Multi Group and its subsidiaries and Qufan Malta is EUR. E-Sun Sky Computer, Qufan Information Technology and their VIEs determined their functional currencies to be the RMB, which is their respective local currencies based on the criteria of ASC 830, “ Foreign Currency Matters” Transactions denominated in foreign currencies are remeasured into the functional currency at the exchange rates prevailing on the transaction dates. Exchange gains and losses resulting from foreign currency transactions are included in the consolidated statements of comprehensive income (loss).
Business combinations and noncontrolling interests	Business combinations and noncontrolling interests The Group accounts for its business combinations using the purchase method of accounting in accordance with ASC 805 (“ASC 805”), “ Business Combinations” The determination and allocation of fair values to the identifiable assets acquired, liabilities assumed and noncontrolling interests is based on various assumptions and valuation methodologies requiring considerable judgment from management. The most significant variables in these valuations are discount rates, terminal values, the number of years on which to base the cash flow projections, as well as the assumptions and estimates used to determine the cash inflows and outflows. The Group determines discount rates to be used based on the risk inherent in the related activity’s current business model and industry comparisons. Terminal values are based on the expected life of assets, forecasted life cycle and forecasted cash flows over that period. For the Company's majority-owned VIEs, a noncontrolling interest is recognized to reflect the portion of their equity which is not attributable, directly or indirectly, to the Group. “Net income (loss)” on the consolidated income statements includes the “net loss attributable to noncontrolling interests”. The cumulative results of operations attributable to noncontrolling interests are also recorded as noncontrolling interests in the Company's consolidated balance sheets.
Cash and cash equivalents	Cash and cash equivalents Cash and cash equivalents represent cash on hand and time deposits, which have original maturities of three months or less
Restricted cash and Time deposits	Restricted cash Restricted cash represents cash held by banks which were granted by the government and designated only for the purchase of fixed assets for certain approved projects. Time deposits Time deposits represent deposits in commercial banks with original maturities of greater than three months but less than a year 20,589 23,859 20,574 3,162
Accounts receivables and allowance for doubtful accounts	Accounts receivables and allowance for doubtful accounts Accounts receivables are carried at original invoiced amount less an allowance for doubtful accounts when collection of the amount is no longer probable. In evaluating the collectability of receivable balances, the Group considers factors such as customer circumstances or age of the receivable. Accounts receivable are written off after all collection efforts have ceased. Collateral is not typically required, nor is interest charged on accounts receivable.
Property and equipment, net	Property and equipment, net Property and equipment are stated at cost and depreciated using the straight-line method over the estimated useful lives of the assets, as follows: Estimated Useful Life Estimated Residual Electronics and office equipment 3-5 years 5 % Motor vehicles 5-10 years 2-5 % Leasehold improvements Shorter of lease term or the estimated useful lives of the assets - Repair and maintenance costs are charged to expense as incurred, whereas the cost of renewals and betterment that extend the useful lives of property and equipment are capitalized as additions to the related assets. Retirements, sales and disposals of assets are recorded by removing the cost and accumulated depreciation from the asset and accumulated depreciation accounts with any resulting gain or loss reflected in the consolidated statements of comprehensive income (loss).
Intangible assets	Intangible assets Intangible assets represent computer software, internet domain name, licensing agreement, and intangible assets arising from business combination. Computer software, internet domain name and licensing agreement purchased from third parties are initially recorded at cost and amortized on a straight line basis over their estimated useful lives of the respective assets. The Group performs valuation of the intangible assets arising from business combination to determine the relative fair value to be assigned to each asset acquired. The acquired intangible assets are recognized and measured at fair value and are expensed or amortized using the straight-line approach over the estimated useful life of the assets. Estimated useful lives of the respective assets are set out as follows: Estimated Useful Life Computer software 3-10 years Internet domain name 10 years Licensing agreement Agreement term Intangible assets arising from business combination Online payment and other licenses, brand name 10-15 years Mobile applications and software 5 years
Goodwill	Goodwill The Group assesses goodwill for impairment in accordance with ASC 350-20 (“ASC 350-20”), “ Intangibles–Goodwill and Other: Goodwill” The Group has the option to first assess qualitative factors to determine whether it is necessary to perform the two-step test in accordance with ASC 350-20. If the Group believes, as a result of the qualitative assessment, that it is more-likely-than-not that the fair value of the reporting unit is less than its carrying amount, the two-step quantitative impairment test described above is required. Otherwise, no further testing is required. In the qualitative assessment, the Group considers primary factors such as industry and market considerations, overall financial performance of the reporting unit, and other specific information related to the operations. In performing the two-step quantitative impairment test, the first step compares the carrying amount of the reporting unit to the fair value of the reporting unit based on either quoted market prices of the ordinary shares or estimated fair value using a combination of the income approach and the market approach. If the fair value of the reporting unit exceeds the carrying value of the reporting unit, goodwill is not impaired and the Group is not required to perform further testing. If the carrying value of the reporting unit exceeds the fair value of the reporting unit, then the Group must perform the second step of the impairment test in order to determine the implied fair value of the reporting unit’s goodwill. The fair value of the reporting unit is allocated to its assets and liabilities in a manner similar to a purchase price allocation in order to determine the implied fair value of the reporting unit goodwill. If the carrying amount of the goodwill is greater than its implied fair value, the excess is recognized as an impairment loss. In 2017, the Group performed qualitative assessments for the reporting units. Based on the requirements of ASC 350-20, the Group evaluated all relevant factors, weighed all factors in their entirety and concluded that the fair value was greater than the carrying amount of the newly acquired entities, and further impairment testing on goodwill was unnecessary as of December 31, 2017.
Impairment of long-lived assets other than goodwill	Impairment of long-lived assets other than goodwill The Group evaluates its long-lived assets or asset group, including property and equipment and intangible assets, with finite lives for impairment whenever events or changes in circumstances (such as a significant adverse change to market conditions that will impact the future use of the assets) indicate that the carrying amount of a group of long-lived assets may not be fully recoverable. When these events occur, the Group evaluates the impairment by comparing the carrying amount of the assets to future undiscounted cash flows expected to result from the use of the assets and their eventual disposition. If the sum of the expected undiscounted cash flow is less than the carrying amount of the assets, the Group recognizes an impairment loss based on the excess of the carrying amount of the asset group over its fair value. No impairment charge for the long-lived assets was recognized for any of the years presented.
Short-term investments and Long-term investments	Short-term investments All highly liquid investments with original maturities of greater than three months, but less than 12 months, are classified as short-term investments in accordance with ASC 320-10, “Investments—Debt and Equity Securities” “Derivatives and Hedging” Long-term investments The Group’s long-term investments consist of cost method investments, equity method investments and available-for-sale investments. In accordance with ASC 325, “ Investments-Other” Investments in entities in which the Group can exercise significant influence but does not own a majority equity interest or control are accounted for using the equity method of accounting in accordance with ASC 323 (“ASC 323”), “Investments-Equity Method and Joint Ventures” According to the above testing, an impairment loss of RMB 28.8 4.4 Investments in limited partnerships greater than 3% to 5% are considered more than minor and accounted for using the equity method, unless it is readily apparent that the Group has virtually no influence over the partnership’s financial and operating policies.
Fair Value measurements	Fair value measurements Financial instruments include cash and cash equivalents, restricted cash, time deposits, accounts receivable, structured deposit (Note 5), other receivables, long-term investments and accounts payable. As of December 31, 2016 and 2017, the carrying values of these financial instruments, approximate their fair values due to their short-term maturities. The Group determined the fair value of the derivative redemption feature and the structured deposit with the assistance of an independent third -party valuation firm. The Group applies ASC 820 (“ASC 820”), “Fair Value Measurements and Disclosures ASC 820 establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows: Level 1— Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2— Include other inputs that are directly or indirectly observable in the marketplace. Level 3— Unobservable inputs which are supported by little or no market activity. ASC 820 describes three main approaches to measuring the fair value of assets and liabilities: (1) market approach; (2) income approach, and (3) cost approach. The market approach uses prices and other relevant information generated from market transactions involving identical or comparable assets or liabilities. The income approach uses valuation techniques to convert future amounts to a single present value amount. The measurement is based on the value indicated by current market expectations about those future amounts. The cost approach is based on the amount that would currently be required to replace an asset.
Revenue recognition	Revenue recognition The Group’s revenues were derived principally from online lottery purchase services before voluntary suspension of this service since April 2015. During the voluntary suspension period, The Group diversified its revenue streams, and derived revenues from mobile gaming services, sports information services, online spot commodity trading services and online gaming services. Revenue is recognized in accordance with ASC 605, “Revenue Recognition” “Revenue from Contracts with Customers” The Company will apply the new revenue standard beginning January 1, 2018, and plans to adopt a modified retrospective approach upon adoption. The Group has set up an implementation schedule and is currently in the process of analyzing each of the Group’s revenue streams in accordance with the new revenue standard to determine the impact on the Group’s consolidated financial statements. Specifically, we recognize revenues based on the following revenue recognition principles: Online lottery purchase services The Group earns service income for online lottery purchase services and revenues are generated from processing lottery purchase orders from end users (“Service Fee”). The Group receives purchase orders from end users through its online platforms, which include website and mobile applications, and processes the orders with the lottery administration centers. Service Fee is received from the lottery administration centers based on the pre-determined service fee rate and the total amount of the processed orders. Pursuant to ASC 605-45, “ Principal Agent Considerations Contingent service fee The Group was also entitled to receive additional Service Fee from lottery administration centers when the total amounts of purchase orders reach an agreed threshold (“Contingent Service Fee”). As the Group is the agent in providing lottery purchase services, any Contingent Service Fee received is recorded as net revenue when the agreed thresholds are reached. Once the Group reaches the agreed thresholds, the Contingent Service Fee is then fixed and not subject to any adjustments. As a result of the voluntarily suspension of the online lottery purchase services mentioned above, the Group did not generate any revenue from this source either since April 2015, and it is uncertain when we will be able to generate this fee again in the future. The Super VIP incentive Certain qualified end users (“Super VIP”) are entitled to receive incentives from the Group based on actual purchase amount of each transaction. As the Group does not receive an additional service or benefit from the Super VIP other than service fee earned from lottery administration centers by the Group from the transaction, the incentives are recognized as a reduction of revenue at each year end in accordance with ASC 605-50, “ Customer Payments and Incentives” Lottery pool purchase service Lottery pools involve individual end users purchasing a share in a pooled lottery outcome or group of outcomes with other end users. Through the lottery pool purchase service, an end user, an initiator, starts a lottery pool by specifying a range of parameters, such as the lottery portfolio, total purchase amount and payout ratio. The initiator is required to commit a minimum initial purchase amount when they initiate a pool, usually a certain percentage of the total purchase amount. Other end users then join the pool by agreeing to the parameters set by the initiator and committing on the purchase amount. When the total purchase amount as specified by the initiator is reached, the pooled lottery purchase order will be delivered in the manner specified by the initiator. When the actual purchase amount does not reach the total purchase amount as specified by the initiator but reaches a certain percentage of total purchase amount before the lottery pool purchase deadline, the Group contributes the remaining outstanding purchase amount (i.e., residual amount of lottery pool) to complete the lottery pool transaction. If the tickets win prizes from the lottery, the Group distributes the cash prizes to the end users based on the predetermined payout ratio, and the residual amount after distribution is retained by the Group. Since the Group contributes the residual amount of lottery pool to earn Service Fee from the purchase made by the lottery pool and does not provide any service to the lottery administration centers, the residual amount of lottery pool contributed by the Group paid to the lottery administration centers is recognized as a reduction of revenue. The residual amount of the lottery pool retained by the Group after distribution of the prizes are presented as “other operating income”, and recognized upon the announcement of lottery results, as the Group’s principal activity is to provide lottery purchase services to end users. Mobile Gaming Services The Group provides mobile gaming services through its designated mobile applications Quiz, Night of Texas Hold’em Poker and Paiyou for Texas Hold’em Poker, and derives revenues from in-game virtual tokens and other virtual items in its game development operations. Once the users purchase virtual tokens or other virtual items through the Group’s own charging system, the Group has an implied obligation to provide the services which enable the virtual tokens or other virtual items to be displayed or used in the games. Thus, the Group initially records the proceeds received from the sales of virtual tokens and other virtual items as deferred revenue, and once they are consumed when the services are rendered to the respective paying players, the Group recognizes the attributable portion of the deferred revenue as revenue. For consumable virtual items representing items that are extinguished after consumption in the form of fixed charges levied on each round of games played, the Group recognizes revenue when the items are consumed and the related services are rendered, since the paying players will not continue to benefit from the virtual items thereafter. For durable virtual items that are accessible and beneficial to paying players over an extended period, the Group recognizes revenue ratably over the average life of durable virtual items for the applicable game, which the Group makes best estimates to be average playing period of paying players. The Group tracks each paying player’s log-in history to estimate the average playing period of paying players. While the Group believes its estimates to be reasonable based on sufficient available paying player information, it may revise such estimates in the future as the games’ operation periods change or there is indication that the similarities in characteristics and playing patterns of paying players of the games change. Any adjustments arising from changes in the estimates of the average paying player life would be applied prospectively. Sports Information Services The Group offers a comprehensive sports information portal via a designated mobile application, which covers (i) real time soccer match information; and (ii) data-driven soccer match predictions generated by our proprietary analysis engine. Users can also post free or pay-per-view contents such as proprietary observations and analyses on the sports information portal. The users pay for each information and data subscription at a fixed price, and the Group pays the original information providers a fixed percentage of total purchase amount. Revenue is recognized when users is accessible to the pay-per-view contents. The Group records the revenue on a net basis because the Group is not the primary obligor to provide the information, but acts as an agent in providing such purchase services. Online spot commodity trading services The Group provides online spot commodity trading services through our designated website and mobile application in Shenzhen Kaisheng . We provide our customers with reliable online spot commodity trading for gold trade and delay products across PC and mobile devices. We processed customer orders through a commercial bank, which is a member of Shanghai Gold Exchange in the past, and is in the process of forming a joint venture with another member of such exchange in the second quarter of 2018 to process its customer orders. Trading commissions are received from the based on the pre-determined fee rate and the total amount of the processed orders. Online gaming services The Group also provides online lottery betting and online casino platforms through our designated website in TMG, We earn difference between betting and winning for online lottery betting services and online casino platforms as revenues that are generated from our registered users. The registered users enter into certain terms and conditions when they first open their accounts with us. Lottery and Casino purchase orders are placed by users through our online platforms view website. Then we process these orders. Prior to processing orders, users prepay all purchase amounts. We pay users prizes when there are any winnings attributable to users. We record revenues on a net basis by deducting the winning amounts from betting amounts. Revenue comprises the fair value of the consideration received for the provision of internet gaming in the ordinary course of the company's activities, which is recognized when the outcome of an event is known.
Cost of services	Cost of services Account handling expenses Account handling expenses, which consist primarily of transaction fees charged by banks and third-party payment processors for cash transfers between our users’ accounts on our online platform including websites and mobile applications and their accounts with banks or third-party payment processors, were RMB 7.0 0.7 3.7 0.6 Server leasing and maintenance expenses Server leasing and maintenance expenses, which consist primarily of leasing expense of servers and other equipment used in providing online services, were RMB 7.6 8.3 9.2 1.4 Lottery Insurance expenses Lottery insurance expenses, are consist of insurance premiums payable to insurers for covering the first two categories of winnings in online gaming services for betting on the outcome of lotteries after the acquisition of TMG in July 2017, were RMB 7.0 1.1 Platform fee Platform fees, are consist of fees payable to online gaming software suppliers for providing various online casino games on The Multi Group’s websites after the acquisition of TMG in July 2017, were RMB 5.9 0.9 Regulatory and compliance fees Regulatory and compliance fees, which consist of fees payable to regulatory bodies such as Gambling Commission, HM Revenue & Customs, Malta Gaming Authority and Certria EOOD after the acquisition of TMG in July 2017, were RMB 0.6 0.1 Amortization fees Amortization fees, which consist primarily of amortization of intangible assets arising from business combination, were RMB 1.2 26.1 4.0 Cost of services also comprises employee costs, business tax and surcharges and other direct costs incurred in providing services. These costs are expensed as incurred.
Sales and marketing expenses	Sales and marketing expenses Commission to certain internet companies The Group is responsible to pay certain internet companies a predetermined fixed percentage of the total purchase or deposit amount only if 1) public users enter the Group’s website by redirection through these internet companies’ website, and/or 2) public users have successfully purchased any lottery tickets, virtual tokens, or betting, or deposited certain amounts of cash into their accounts in the Group’s website. The Group is responsible for providing respective services when such public users enter the Group’s website to purchase lottery tickets, virtual tokens or betting. Since these internet companies are providing similar services as those services that have been provided by the Group’s internal sales personnel agent, any relevant costs to be paid by the Group is treated as sales and marketing expenses. Advertising expenditure Advertising costs are expensed as incurred and are included in “sales and marketing expenses” in the consolidated statements of comprehensive income (loss). Advertising expenses for the years ended December 31, 2015, 2016 and 2017 were approximately 26,192 347 967 149 Sponsorship expenses The Group’s sales and marketing expenses also consist of payments under a sponsorship contract. Accounting for sponsorship payments is based upon specific contract provisions. Generally, sponsorship payments are expensed on a straight-line basis over the term of the contract after giving recognition to periodic performance provisions of the contract. Prepayments made under the contract are included in prepayments based on the period to which the prepayments apply. Awards granted to certain qualified end users All new end users are entitled to receive bonus credits from the Group upon the initial registration of their user accounts and all existing users are entitled to receive bonus credits from the Group by depositing a specified amount of cash into their user accounts during a marketing promotion period. The end users can only apply the bonus credits received against future lottery product purchases and online gaming orders processed by the Group. The bonus credits are recognized as sales and marketing expenses when the bonus credits are granted to the end users. All new and existing end users are entitled to receive additional prize money for winning tickets from selected lotteries purchased through the Group during a marketing promotion period. The cost of the additional prize money is to be shared between the lottery administration centers and the Group at a predetermined percentage or funded entirely by the Group. As the Group does not receive an identifiable benefit in return for the consideration that is sufficiently separable from the lottery administration centers’ purchase of lottery processing services from the Group, the additional prize money provided to the lottery administration center, are recognized as a reduction of revenue at each period end in accordance with ASC 605-50, “ Customer Payments and Incentives”.
Service development expenses	Service development expenses Service development expenses consist primarily of personnel-related expenses incurred for the development of, enhancement to, and maintenance of the Group’s website that either (i) did not meet the capitalization criteria in accordance with ASC 350, “Intangibles - Goodwill and other”
Leases	Leases The Group leases certain office facilities under cancelable and non-cancelable operating leases, generally with an option to renew upon expiration of the lease term. In accordance with ASC 840, “ Leases” For the lessee, a lease is a capital lease if any of the following conditions exist: a) ownership is transferred to the lessee by the end of the lease term, b) there is a bargain purchase option, c) the lease term is at least 75% of the properties estimated remaining economic life or d) the present value of the minimum lease payments at the beginning of the lease term is 90% or more of the fair value of the leased property to the lessor at the inception date.
Income taxes	The Group follows the liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are determined based on the difference between the financial reporting and tax bases of assets and liabilities using enacted tax rates that will be in effect in the period in which the differences are expected to reverse. The Group records a valuation allowance to offset deferred tax assets if based on the weight of available evidence, it is more-likely-than-not that some portion, or all, of the deferred tax assets will not be realized. The effect on deferred taxes of a change in tax rates is recognized in the consolidated statements of comprehensive income (loss) in the period that includes the enactment date. Interest and penalties arising from underpayment of income taxes are computed in accordance with the related PRC tax law and is classified in the consolidated statements of comprehensive income (loss) as income tax expense. The amount of interest expense is computed by applying the applicable statutory rate of interest to the difference between the tax position recognized and the amount previously taken or expected to be taken in a tax return. In accordance with the provisions of ASC 740 (“ASC 740”), “Income taxes” tax position if a tax return position or future tax position is “more likely than not” to be sustained upon examination based solely on the technical merits of the position. Tax positions that meet the “more likely than not” recognition threshold are measured at the largest amount of tax benefit, determined on a cumulative probability basis, that has a greater than fifty percent likelihood of being realized upon settlement. In conjunction with ASC 740, the Group also applied ASC 740-30 (“ASC 740-30”), “ Income Taxes: Other Considerations or Special Areas”
Share-based compensation	Share options and restricted shares granted to employees and directors Share options and restricted shares Compensation - Stock compensation ASC 718 requires forfeitures to be estimated at the time of grant and revised, if necessary, in the subsequent period if actual forfeitures differ from initial estimates. Forfeiture rate is estimated based on historical and future expectation of employee turnover rate and is adjusted to reflect future change in circumstances and facts, if any. Share-based compensation expense is recorded net of estimated forfeitures such that expense was recorded only for those share-based awards that are expected to vest. To the extent the Group revises this estimate in the future, the share-based payments could be materially impacted in the period of revision, as well as in following periods. The compensation costs associated with a modification of the terms of the award (“Modification Award”) are recognized if either the original vesting condition or the new vesting condition has been achieved. Such compensation costs cannot be less than the grant-date fair value of the original award. The incremental compensation cost is measured as the excess of the fair value of the Modification Award over the fair value of the original award at the modification date. Therefore, in relation to the Modification Award, the Group recognizes share-based compensation over the vesting periods of the new options, which comprises, (1) the amortization of the incremental portion of share-based compensation over the remaining vesting term, and (2) any unrecognized compensation cost of original award, using either the original term or the new term, whichever is higher for each reporting period. Share options granted to non-employees The Group records share-based compensation expense for awards granted to non-employees in exchange for services at fair value in accordance with the provisions of ASC 505-50, “ Equity-based payment to non-employees” The Group, with the assistance of an independent valuation firm, determined the fair values of the share options recognized in the consolidated financial statements. The binomial option pricing model is applied in determining the estimated fair value of the share options granted to employees and non-employees.
Earnings per share	Earnings (Loss) per share The Group computes earnings per Class A and Class B ordinary shares in accordance with ASC 260 (“ASC 260”), “ Earnings Per Share” The liquidation and dividend rights of the holders of the Group’s Class A and Class B ordinary shares are identical, except with respect to voting. As a result, and in accordance with ASC 260, the undistributed earnings for each year are allocated based on the contractual participation rights of the Class A and Class B ordinary shares as if the earnings for the year had been distributed. As the liquidation and dividend rights are identical, the undistributed earnings are allocated on a proportionate basis. Further, as the conversion of Class B ordinary shares is assumed in the computation of the diluted net loss per share of Class A ordinary shares, the undistributed earnings are equal to net loss for that computation. For the purposes of calculating the Group’s basic and diluted earnings (loss) per Class A and Class B ordinary shares, the ordinary shares relating to the options that were are assumed to have been outstanding from the date of exercise of such options.
Government grants	Government grants are recognized when there is reasonable assurance that the attached conditions will be complied with. When the grant relates to an expense item, it is recognized in the consolidated statements of comprehensive income (loss) over the period necessary to match the grant on a systematic basis to the related costs. Where the grant relates to an asset acquisition, it is recognized in the consolidated statements of comprehensive income (loss) in proportion to the depreciation of the related assets.
Treasury shares	Treasury shares The Group accounts for treasury shares using the cost method. Under this method, the cost incurred to purchase the shares is recorded in the treasury shares account on the consolidated balance sheets. At retirement, the ordinary shares account is charged only for the aggregate par value of the shares. The excess of the acquisition cost of treasury shares over the aggregate par value is allocated between additional paid-in capital (up to the amount credited to the additional paid-in capital upon original issuance of the shares) and retained earnings.
Change in accounting principle	Change in accounting principle There were no changes during 2017 relating to (i) significant and critical accounting policies, (ii) critical accounting estimates and (iii) evaluation of the quality and application of the Company’s accounting policies and reasonableness of estimates.
Recent accounting pronouncements	Recent accounting pronouncements In May 2014, the Financial Accounting Standards Board, or the FASB, issued ASU No. 2014-09, “Revenue from Contracts with Customers” “Revenue Recognition” “Revenue from Contracts with Customers-Deferral of the effective date” In January 2016, the FASB issued ASU No. 2016-01 (“ASU 2016-01”), “ Financial Instruments” In February 2016, the FASB issued ASU No. 2016-02, “Leases” In June 2016, the FASB issued ASU No. 2016-13 (“ASU 2016-13”), “Financial Instruments – Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments” In November 2016, the FASB issued Accounting Standards Update No. 2016-18 (“ASU 2016-18”), “Statement of Cash Flows (Topic 230): Restricted Cash” In January 2017, the FASB issued Accounting Standards Update No. 2017-04(“ASU 2017-04”), “Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment” In May 2017, the FASB issued ASU No. 2017-09, Scope of Modification Accounting, to provide guidance to clarify when to account for a change to the terms or conditions of a share-based payment award as a modification. Under the new guidance, modification accounting is required only if the fair value, the vesting conditions, or the classification of the award (as equity or liability) changes as a result of the changes in terms or conditions. ASU 2017-09 is effective for all entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted and application is prospective. The Group has not early adopted this update and it will become effective on January 1, 2018. The Group does not expect that the adoption of this guidance will have a material impact on its consolidated financial statements. In July 2017, the FASB issued ASU No. 2017-11, Earnings Per Share (Topic 260), Distinguishing Liabilities from Equity (Topic 480), and Derivatives and Hedging (Topic 815). The guidance of Part I is to clarify accounting for certain financial instruments with down round feature in a financial instrument that reduces the strike price of an issued financial instrument if the issuer sells shares of its stock for an amount less than the currently stated strike price of the issued financial instrument or issues an equity-linked financial instrument with a strike price below the currently stated strike price of the issued financial instrument. For freestanding equity classified financial instruments, the amendments require entities that present earnings per share (“EPS”) in accordance with Topic 260 to recognize the effect of the down round feature when it is triggered. That effect is treated as a dividend and as a reduction of income available to common shareholders in basic EPS. Convertible instruments with embedded conversion options that have down round features are now subject to the specialized guidance for contingent beneficial conversion features. The amendments also recharacterize the indefinite deferral of certain provisions of Topic 480 that now are presented as pending content in the Codification, to a scope exception. Those amendments do not have an accounting effect. The amendments in Part I of ASU No. 2017-11 are effective for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Early adoption is permitted for all entities, including adoption in an interim period. The amendments in Part II of this Update do not require any transition guidance because those amendments do not have an accounting effect. The Group has not early adopted this update and it will become effective on July 1, 2020. The Group is currently evaluating the impact of our pending adoption of ASU 2017-11 on its consolidated financial statements. In February 2018, the FASB issued ASU No. 2018-02, “Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income”. The amendments eliminate the stranded tax effects resulting from the Tax Cuts and Jobs Act and will improve the usefulness of information reported to financial statement users. ASU No. 2018-02 is effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. The Group has not early adopted this update and it will become effective on July 1, 2019. The Group does not expect that the adoption of this guidance will have a material impact on its consolidated financial statements. In March 2018, the FASB issued ASU 2018-05 - Income Taxes (Topic 740): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118 that was signed into law on December 22, 2017 and Staff Accounting Bulletin No. 118 ("SAB 118") that was released by the Securities and Exchange Commission. The Act changes numerous provisions that impact U.S. corporate tax rates, business-related exclusions, and deductions and credits and may additionally have international tax consequences for many companies that operate internationally. The Group has evaluated the impact of the Act as well as the guidance of SAB 118 and incorporated the changes into the determination of a reasonable estimate of the deferred tax and appropriate disclosures in the notes to our consolidated financial statements (see Note 12).

ORGANIZATION (Tables)

ORGANIZATION (Tables)	12 Months Ended
	Dec. 31, 2017
Schedule of Variable Interest Entity	Entity Date of Place of Percentage Principal Subsidiaries Fine Brand Limited (“BVI”) February 9, 2011 British Virgin Islands 100 % Investment Holding 500wan HK Limited (“500wan HK”) March 8, 2011 Hong Kong 100 % Investment Holding 500.com USA Corporation (“500.com USA”) July 21, 2014 USA 100 % Investment Holding 500.com Gaming UK Limited (“500.com UK”) August 5, 2016 UK 100 % Investment Holding E-Sun Sky Computer (Shenzhen) Co., Ltd. (“E-Sun Sky Computer”) June 18, 2007 PRC 100 % Software Service Shenzhen Guangyi Network Technology Co., Ltd. (“Guangyi Network”) August 5, 2015 PRC 100 % Software Service Qufan Internet Technology Inc. (“Qufan Cayman”) September 30, 2016 Cayman 51 % Investment Holding Qufan Internet Technology (HK) Limited (“Qufan HK”)******** October 18, 2016 Hong Kong 51 % Investment Holding Qufan Internet Technology (Malta) Limited (“Qufan Malta”)******** August 4, 2017 Malta 51 % Online Gaming Service Qufan Information Technology (Shenzhen) Co., Ltd (“Qufan Information Technology”)******** January 5, 2017 PRC 51 % Software Service 500.com Nihon Co.,Ltd. (“500.com JP”) July 27, 2017 Japan 100 % Investment Holding The Multi Group Ltd (“The Multi Group”) June 26, 2015 Malta 93 % Investment Holding Multi Warehouse Ltd******* December 3, 2014 Malta 93 % Online Gaming Multi Brand Gaming Ltd******* October 3, 2014 Malta 93 % Online Gaming Multilotto UK Ltd******* September 1, 2016 Malta 93 % Online Gaming Lotto Warehouse Ltd******* September 1, 2016 Malta 93 % Online Gaming Wasp Media Ltd******* August 12, 2016 Malta 93 % Online Gaming Round Spot Services Ltd******* May 6, 2015 Cyprus 93 % Online Gaming Multi Pay N.V.******* August 25, 2011 Curacao 93 % Online Gaming Multilotto Australia PTY Ltd******* December 13, 2016 Australia 93 % Online Gaming Entity Date of Place of Percentage of Principal VIEs Shenzhen E-Sun Network Co., Ltd. (“E-Sun Network”) December 7, 1999 PRC - Online Lottery Service Shenzhen Youlanguang Science and Technology Co., Ltd. (“Youlanguang Technology”) December 16, 2008 PRC - Online Lottery Service Shenzhen Guangtiandi Science and Technology Co., Ltd. (“Guangtiandi Technology”) December 16, 2008 PRC - Online Lottery Service Shenzhen Tongfu Technology Co., Ltd. (“Tongfu Technology”) August 28, 2015 PRC - Third party payment service Shenzhen Qufan Network Technology Co., Ltd. (“Shenzhen Qufan”) ***** September 13, 2013 PRC - Mobile Gaming Subsidiaries of the VIEs Shenzhen E-Sun Sky Network Technology Co., Ltd. (“E-Sun Sky Network”) * May 22, 2006 PRC - Online Lottery Service Lhasa Yicai Network Technology Co., Ltd. (“Lhasa Yicai”) ** October 17, 2014 PRC - Online Lottery Service Shenzhen Yicai Network Technology Co., Ltd. (“Shenzhen Yicai”) *** July 21, 2015 PRC - Online Lottery Service Shenzhen Wubai Zhifu Co.,Ltd. (“500Fu”)*** April 23, 2014 PRC - Third party payment service Shenzhen Fenggu Network Technology Co., Ltd. (“Shenzhen Fenggu”) **** August 27, 2015 PRC - Online Lottery Service Beijing Baifengrun Science and Technology Co., Ltd. (“Baifengrun Technology”) ***** September 13, 2011 PRC - Development, operation of Online Gaming Shenzhen Kaisheng Jinfu Enterprise Management Co., Ltd. (“Shenzhen Kaisheng”) ***** June 24, 2016 PRC - Online Spot Commodity Trading Services Beijing Daguo Xiaoxian Culture Media Co., Ltd (“Daguoxiaoxian”)****** July 24, 2014 PRC - Investment Holding * A subsidiary of E-Sun Network ** A subsidiary of E-Sun Sky Network *** A subsidiary of Youlanguang Technology **** A subsidiary of Shenzhen Yicai ***** A subsidiary of Guangtiandi Technology ****** A subsidiary of Shenzhen Qufan ******* A subsidiary of The Multi Group ******** A subsidiary of Qufan Cayman
Variable Interest Entity, Primary Beneficiary [Member]
Carrying Amounts of Assets and Liabilities, Results of Operations and Cash Flows of VIEs	The carrying amounts of the assets, liabilities, the results of operations and cash flows of all of these VIEs included in the Group’s consolidated balance sheets, statements of comprehensive income (loss) and statements of cash flows are as follows: As of As of As of RMB RMB US$ ASSETS Current assets: Cash and cash equivalents 257,001 101,023 15,527 Restricted cash 3,703 1,237 190 Short-term investments - 20,000 3,074 Amounts due from intergroup companies 1,589 2,562 394 Prepayments and other current assets 109,032 38,016 5,843 Total current assets 371,325 162,838 25,028 Non-current assets: Property and equipment, net 46,986 100,627 15,466 Intangible assets, net 60,408 49,558 7,617 Deposits 4,397 4,254 654 Long-term investments 53,995 53,044 8,153 Other non-current assets 2,671 6,296 968 Goodwill 160,438 130,613 20,075 Total non-current assets 328,895 344,392 52,933 TOTAL ASSETS 700,220 507,230 77,961 LIABILITIES Current liabilities: Amounts due to intergroup companies 69,423 71,168 10,938 Accrued payroll and welfare payable 15,846 14,703 2,260 Accrued expenses and other current liabilities 67,166 57,761 8,878 Income tax payable 8,897 5,310 816 Total current liabilities 161,332 148,942 22,892 Non-current liabilities: Deferred tax liability, non-current 14,902 12,721 1,955 Long-term payables 42,705 27,673 4,253 Total non-current liabilities 57,607 40,394 6,208 TOTAL LIABILITIES 218,939 189,336 29,100 For the years ended December 31, 2015 2016 2017 2017 RMB RMB RMB US$ Net revenues 87,065 10,928 81,954 12,596 Net loss (130,330) (8,851) (124,034) (19,064) For the years ended December 31, 2015 2016 2017 2017 RMB RMB RMB US$ Net cash (used in) operating activities (83,113) (50,876) (162,328) (24,949) Net cash (used in) provided by investing activities (105,922) 166,222 6,350 976 Net cash (used in) provided by financing activities - - - -

SUMMARY OF SIGNIFICANT ACCOUN30

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2017
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Schedule of Property and Equipment	Category Estimated Useful Life Estimated Residual Electronics and office equipment 3-5 years 5 % Motor vehicles 5-10 years 2-5 % Leasehold improvements Shorter of lease term or the estimated useful lives of the assets -
Estimated Useful Lives of Intangible Assets	Estimated Useful Life Computer software 3-10 years Internet domain name 10 years Licensing agreement Agreement term Intangible assets arising from business combination Online payment and other licenses, brand name 10-15 years Mobile applications and software 5 years

BUSINESS COMBINATION (Tables)

BUSINESS COMBINATION (Tables)	12 Months Ended
	Dec. 31, 2017
Qufan [Member]
Schedule of fair value of the consideration transferred at the acquisition date	Amount RMB Fair value of consideration transferred Cash consideration 52,760 Contingent consideration 52,240 Total Consideration 105,000
Summary of the fair values of the assets acquired and liabilities assumed at the acquisition date	The Group obtained a third-party valuation of certain intangible assets. Amount Amortization Years RMB Cash 439 Mobile applications 60,200 5.0 Other receivables 37,863 Total identifiable assets acquired 98,502 Deferred tax liabilities (15,050) Other current liabilities (10,281) Total liabilities assumed (25,331) Net identifiable assets acquired 73,171 Noncontrolling interests 98,784 Total Consideration 105,000 Goodwill 130,613
Summary of unaudited pro forma information	The pro forma adjustments are based upon available information and certain assumptions that management believes are reasonable. For the years ended December 31, (unaudited) 2015 2016 2016 RMB RMB US$ Pro forma total revenues 99,921 27,379 3,943 Pro forma net loss (333,814) (217,359) (31,306) Pro forma net loss attributable to 500.com Limited (328,795) (209,921) (30,235)
Shenzhen Caiyu [Member]
Summary of the fair values of the assets acquired and liabilities assumed at the acquisition date	The following table summarizes the fair values of the assets acquired and liabilities assumed at the acquisition date. Amount RMB Cash 700 Other receivables 635 Total identifiable assets acquired 1,335 Other current liabilities (2,660) Total liabilities assumed (2,660) Net identifiable liabilities acquired (1,325) Total Consideration 1,000 Goodwill 2,325
Multi Group [Member]
Summary of the fair values of the assets acquired and liabilities assumed at the acquisition date	The following table summarizes the fair values of the assets acquired and liabilities assumed at the acquisition date. The Group obtained a third-party valuation of certain intangible assets. The calculation of RMB amount was based on the exchange rate of 1.00 EUR to 7.7514 Amount Amount Amount Amortization Years EUR RMB USD License 19,400 150,377 23,113 10.0 Brand name 11,100 86,041 13,224 10.0 Software 900 6,976 1,072 5.0 Others 7,116 55,159 8,478 Total identifiable assets acquired 38,516 298,553 45,887 Deferred tax liabilities (1,164) (9,023) (1,694) Other current liabilities (1,422) (11,022) (1,387) Total liabilities assumed (2,586) (20,045) (3,081) Net identifiable assets acquired 35,930 278,508 42,805 Noncontrolling interests # 2,915 22,595 3,473 Total Consideration 49,754 385,662 59,275 Goodwill 16,739 129,749 19,943
Schedule of acquired intangible assets have weighted average economic lives	Acquired intangible assets have weighted average economic lives from the date of purchase as follows: License 10.0 Brand name 10.0 Software 5.0
Summary of unaudited pro forma information	The following unaudited pro forma information summarizes the results of operations of the Group for the years ended December 31, 2016 and 2017, as if the acquisition had been completed on January 1, 2016. These pro forma results have been prepared for comparative purposes only and do not purport to be indicative of what operating results would have been had the acquisition actually taken place on the date indicated and may not be indicative of future operating results. For the years ended December 31, (unaudited) 2016 2016 2017 2017 2017 EUR RMB EUR RMB USD Pro forma total revenues 11,686 76,893 12,188 93,334 14,345 Pro forma net income (loss) 2,519 16,576 (1,614) (12,360) (1,900) Pro forma net income (loss) attributable to 2,343 15,416 (1,501) (11,495) (1,767)
Summary of Redeemable Noncontrolling Interest	The fair value of redeemable noncontrolling interest was initially recorded as the value assessed by the third-party on the acquisition day and is increased or decreased based on earnings or losses of the investments allocable to the noncontrolling interest. For the year ended December 31, 2017 EUR RMB USD Noncontrolling interest-valuation* 2,915 22,595 3,472 Total comprehensive income attributable to noncontrolling interest (70) (543) (83) Redeemable noncontrolling interest 2,845 22,052 3,389 *Noncontrolling interest in EUR was evaluated by third party appraiser as of the acquisition day. The calculation of RMB amount was based on the exchange rate of 1.00 EUR to 7.7514 RMB at the acquisition date.

INVESTMENTS (Tables)

INVESTMENTS (Tables)	12 Months Ended
	Dec. 31, 2017
INVESTMENTS [Abstract]
Schedule of long term investments	As of As of As of RMB RMB US$ Cost Method Investments Private companies 45,156 47,214 7,256 Limited partnerships 19,137 22,290 3,426 Cost of cost method investments 64,293 69,504 10,682 Impairment loss on equity investment (8,583) (3,267) (502) Carrying amount of cost method investments 55,710 66,237 10,180 Equity Method Investments Private company 5,500 - - Listed company - 283,655 43,597 Limited partnership 20,796 27,331 4,201 Cost of equity method investments 26,296 310,986 47,798 Impairment loss on equity investment - (27,893) (4,287) Loss from equity method investment (813) (2,257) (347) Carrying amount of equity method investments 25,483 280,836 43,164 Available-for-sale investments Available-for-sale investments 3,512 - - Change in fair value of available-for-sale investments 754 - - Carrying amount of available-for-sale investments 4,266 - - Total carrying amount of long-term investments 85,459 347,073 53,344

ACCOUNTS RECEIVABLE (Tables)

ACCOUNTS RECEIVABLE (Tables)	12 Months Ended
	Dec. 31, 2017
ACCOUNTS RECEIVABLE [Abstract]
Accounts Receivable and Related Allowance for Doubtful Accounts	Accounts receivable and the related allowance for doubtful accounts are summarized as follows: As of As of As of RMB RMB US$ Accounts receivable 19,847 19,847 3,050 Less: Allowance for doubtful accounts (19,847) (19,847) (3,050) Accounts receivable, net - - -

PREPAYMENTS, OTHER RECEIVABLE34

PREPAYMENTS, OTHER RECEIVABLES AND DEPOSITS (Tables)	12 Months Ended
	Dec. 31, 2017
PREPAYMENTS, OTHER CURRENT ASSETS AND DEPOSITS [Abstract]
Summary of Prepayments and Other Current Assets	As of As of As of RMB RMB US$ Receivables from third party payment service providers 13,450 1,893 291 Interest receivables 4,882 1,158 178 Deposit for share repurchase * 16,557 13,318 2,047 Receivables of remaining consideration ** 71,820 - - Deferred sponsorship and advertising expenses - 3,673 565 Prepaid insurance - 5,344 821 Deferred expense*** - 15,063 2,315 Receivables for disposal of long-term investments**** - 9,322 1,432 Others 18,825 24,278 3,730 125,534 74,049 11,379 * Deposit for share repurchase represents cash paid in advance by the Group under the share repurchase program commenced in 2015. The Group has received this deposit in Feb 2018. ** Receivables of remaining consideration represent the remaining cash consideration relating to the disposal of equity interest in Sumpay.cn as of December 31, 2016, which has been fully collected in March 2017. *** Deferred expense represents cash paid in advance to vendors, such as consultant expense, marketing promotion expense and platform fee, which would be amortized according to their respective service periods. **** Receivables for disposal of long-term investment represent the receivables from the disposal of Caiyu and Xibianyuan as of December 31, 2017. In March 2018, the amount related to the disposal of Xibianyuan has been fully collected.
Summary of Deposits	Deposits consist of the following: As of As of RMB RMB US$ Deposits for office leases and others 5,810 5,764 886

PROPERTY AND EQUIPMENT, NET (Ta

PROPERTY AND EQUIPMENT, NET (Tables)	12 Months Ended
	Dec. 31, 2017
PROPERTY AND EQUIPMENT, NET [Abstract]
Schedule of Property and Equipment	Property and equipment consist of the following: As of As of As of RMB RMB US$ Electronics and office equipment 37,846 44,011 6,764 Motor vehicles 11,783 12,828 1,972 Leasehold improvements 49,045 106,904 16,431 Property and equipment, cost 98,674 163,743 25,167 Less: Accumulated depreciation (44,739) (56,752) (8,723) Property and equipment, net 53,935 106,991 16,444

INTANGIBLE ASSETS, NET (Tables)

INTANGIBLE ASSETS, NET (Tables)	12 Months Ended
	Dec. 31, 2017
INTANGIBLE ASSETS, NET [Abstract]
Schedule of Intangible Assets	Intangible assets consist of the following: As of As of As of RMB RMB US$ Cost: Computer software 3,576 24,649 3,788 License agreement 800 152,277 23,405 Mobile applications 60,200 60,200 9,253 Internet domain name 2,861 3,023 465 Brand name - 86,041 13,224 67,437 326,190 50,135 Accumulated amortization: Computer software (2,320) (8,059) (1,239) License agreement (800) (8,059) (1,239) Mobile applications (1,188) (13,228) (2,033) Internet domain name (1,582) (1,814) (279) Brand name - (3,944) (606) (5,890) (35,104) (5,396) Intangible assets, net 61,547 291,086 44,739
Schedule of Estimated Amortization Expense	Annual estimated amortization expense for each of the five succeeding years is as follows: RMB US$ 2018 41,760 6,418 2019 41,281 6,345 2020 38,981 5,991 2021 36,749 5,648 2022 and thereafter 132,315 20,337 291,086 44,739

ACCRUED EXPENSES AND OTHER CU37

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2017
Payables and Accruals [Abstract]
Summary of Accrued Expenses and Other Current Liabilities	As of As of As of RMB RMB US$ Advance from end users* 34,388 35,888 5,516 Business tax and other taxes payable 3,280 4,118 634 Deferred government grant 5,018 2,807 431 Professional fees payable 15,136 12,039 1,850 Promotional events payables 7,921 8,120 1,248 Decoration payables** - 5,328 819 Unpaid consideration for business combination*** 104,490 54,550 8,384 Others 13,922 29,487 4,532 184,155 152,337 23,414 * Advance from end users represents payments received by the Group in advance from the end users prior to the services provided. ** Decoration payables represent the decoration expenses accrued including office furniture mainly for the new office building rented in Nanshan district, Shenzhen, which became formally functional in December 2017. *** Unpaid consideration for business combination represents the unpaid cash consideration and contingent consideration relating to the acquisition of Qufan as of December 31, 2017. On February 9, 2018, the Company announced that it has disposed of its 51 127,500 54,550

ACCUMULATED DEFICIT AND STATU38

ACCUMULATED DEFICIT AND STATUTORY RESERVE (Tables)	12 Months Ended
	Dec. 31, 2017
ACCUMULATED DEFICIT AND STATUTORY RESERVE [Abstract]
Schedule of Accumulated Deficit	As of As of As of RMB RMB US$ PRC statutory reserved funds 30,224 30,882 4,746 Unreserved accumulated deficit (568,552) (888,633) (136,580) (538,328) (857,751) (131,834)

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2017
INCOME TAXES [Abstract]
Schedule of Income (Loss) before Income Taxes	2015 2016 2017 2017 RMB RMB RMB US$ Cayman Islands (163,416) (179,348) (163,239) (25,089) British Virgin Islands - (31) (3) - USA (2,320) (3,809) (4,703) (723) Hong Kong (1,470) (10,524) (10,929) (1,680) Japan - - (174) (27) Malta - - (4,321) (664) Curacao - - 7,449 1,145 Cyprus - - (13) (2) Australia - - - - PRC (115,034) (12,483) (152,575) (23,451) (282,240) (206,195) (328,508) (50,491)
Schedule of Current and Deferred Components	2015 2016 2017 2017 RMB RMB RMB US$ Current tax (expense) benefit (1,890) (3,553) 12,771 1,963 Deferred tax (expense) benefit (40,079) 496 (405) (62) Income tax (expense) benefit (41,969) (3,057) 12,366 1,901
Reconciliation of Tax Computed Applying Statutory Income Tax Rate	2015 2016 2017 2017 RMB RMB RMB US$ Income (loss) before income taxes (282,240) (206,195) (328,508) (50,491) Income tax computed at applicable tax rates (25%) (70,560) (51,549) (82,127) (12,623) Effect of different tax rates in different jurisdictions 1,206 4,743 693 107 Non-deductible expenses 47,324 54,588 87,632 13,468 Effect of tax rate changes (24,125) (1,841) - - Change in valuation allowance 88,661 (5,144) - - Changes in interest and penalties on unrecognized tax benefits 3,920 3,105 5,098 784 Effect of EIT reversal for previous years (2,099) 2,760 (19,704) (3,028) Research and development super-deduction (2,363) (2,947) (1,364) (210) Others 5 (658) (2,594) (399) 41,969 3,057 (12,366) (1,901)
Schedule of Unrecognized Tax Benefits Reconciliation	2015 2016 2017 2017 RMB RMB RMB US$ Balance at beginning of year 38,901 42,983 38,457 5,911 Increase relating to current year tax positions 7,496 3,630 5,194 798 Decrease relating to prior year tax positions (1,119) (3,204) (1,595) (245) Decrease relating to expiration of applicable statute of limitations (2,295) (4,952) (17,758) (2,729) Balance at end of year 42,983 38,457 24,298 3,735
Components of Deferred Taxes	2016 2017 2017 RMB RMB US$ Deferred tax assets, non-current portion Advertising expenditure deductible in future years 58,654 61,191 9,405 Deferred revenue - 982 151 Deferred government grants 2,417 2,417 371 Loss from equity method investment 203 203 31 Bad debt provision 4,962 5,097 783 Accrued rental expense 817 817 126 Impairment loss 1,250 1,250 192 Net operating losses (“NOLs”) 16,411 34,700 5,333 Less: valuation allowance (84,714) (106,657) (16,392) Total deferred tax assets, non-current portion - - - Deferred tax liabilities, non-current portion Apps and other licenses arisen from business combination (14,902) (19,475) (2,993) Total deferred tax liabilities, non-current portion (14,902) (19,475) (2,993)

SHARE-BASED PAYMENT (Tables)

SHARE-BASED PAYMENT (Tables)	12 Months Ended
	Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Share Option Activity and Related Information	Share options granted to employees and directors Number of Weighted Weighted Weighted Aggregated US$ US$ (Years) US$’000 Outstanding, January 1, 2017 55,382,320 1.70 1.12 2.65 Granted - - - - Forfeited (12,500,000) 1.79 0.90 Exercised (894,760) 1.22 1.28 Outstanding, December 31, 2017 41,987,560 1.04 1.18 1.59 3,986 Vested and expected to vest at December 31, 2017 41,762,129 1.05 1.19 1.51 3,803 Exercisable at December 31, 2017 37,006,200 0.95 1.22 1.53 3,986
Schedule of Share-Based Compensation Expenses Relating to Options Granted	For the year ended December 31, 2015 Employees Directors Total Total RMB RMB RMB US$ Cost of services 3,052 - 3,052 471 Sales and marketing 13,771 - 13,771 2,126 General and administrative 109,940 9,062 119,002 18,371 Service development expenses 22,804 - 22,804 3,520 149,567 9,062 158,629 24,488 For the year ended December 31, 2016 Employees Directors Total Total RMB RMB RMB US$ Cost of services 2,993 - 2,993 431 Sales and marketing 13,966 - 13,966 2,012 General and administrative 114,244 7,114 121,358 17,479 Service development expenses 25,024 - 25,024 3,604 156,227 7,114 163,341 23,526 For the year ended December 31, 2017 Employees Directors Total Total RMB RMB RMB US$ Cost of services 1,343 - 1,343 206 Sales and marketing 9,228 - 9,228 1,418 General and administrative 61,113 3,089 64,202 9,868 Service development expenses 16,370 - 16,370 2,516 88,054 3,089 91,143 14,008
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	Restricted shares granted to employees and directors Number of Weighted Weighted Aggregated US$ (Years) US$’000 Outstanding, January 1, 2017 - Granted 12,580,280 0.96 9.63 12,719 Forfeited - Exercised - Outstanding, December 31, 2017 12,580,280 0.96 9.63 12,719 Vested and expected to vest at December 31, 2017 12,580,280 0.96 9.63 12,719 Exercisable at December 31, 2017 -

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	12 Months Ended
	Dec. 31, 2017
COMMITMENTS AND CONTINGENCIES [Abstract]
Schedule of Operating Lease Commitments	Operating lease commitments RMB US$ 2018 30,217 4,644 2019 28,154 4,327 2020 24,630 3,786 83,001 12,757

LOSSES PER SHARE (Tables)

LOSSES PER SHARE (Tables)	12 Months Ended
	Dec. 31, 2017
EARNINGS PER SHARE [Abstract]
Calculation of Basic and Diluted Earnings Per Share	Basic and diluted losses per share for each of the years presented is calculated as follows: For the years ended 2015 2016 2017 RMB RMB RMB RMB RMB US$ RMB US$ Class A Class B Class A Class B Class A Class A Class B Class B Losses per share—basic: Numerator: Allocation of net loss attributable to 500.com Limited’s ordinary shareholders used in calculating income per ordinary share—basic (247,664) (76,233) (166,057) (36,908) (259,319) (39,857) (57,780) (8,880) Denominator: Weighted average number of ordinary shares outstanding used in calculating basic losses per share 294,836,665 90,753,548 339,429,946 75,442,810 333,909,823 333,909,823 74,400,299 74,400,299 Denominator used for losses per share 294,836,665 90,753,548 339,429,946 75,442,810 333,909,823 333,909,823 74,400,299 74,400,299 Losses per share—basic (0.84) (0.84) (0.49) (0.49) (0.78) (0.12) (0.78) (0.12) Losses per share—diluted: Numerator: Allocation of net loss attributable to 500.com Limited’s ordinary shareholders used in calculating loss per ordinary share— diluted (247,664) (76,233) (166,057) (36,908) (259,319) (39,857) (57,780) (8,880) Reallocation of net loss attributable to 500.com Limited’s ordinary shareholders as a result of conversion of Class B to Class A shares (76,233) - (36,908) - (57,780) (8,880) - - Net loss attributable to ordinary shareholders (323,897) (76,233) (202,965) (36,908) (317,099) (48,737) (57,780) (8,880) Denominator: Weighted average number of ordinary shares outstanding used in calculating basic losses per share 294,836,665 90,753,548 339,429,946 75,442,810 333,909,823 333,909,823 74,400,299 74,400,299 Conversion of Class B to Class A ordinary shares 90,753,548 - 75,442,810 - 74,400,299 74,400,299 - - Share options - - — - - - - - Denominator used for losses per share 385,590,213 90,753,548 414,872,756 75,442,810 408,310,122 408,310,122 74,400,299 74,400,299 Losses per share—diluted (0.84) (0.84) (0.49) (0.49) (0.78) (0.12) (0.78) (0.12) Losses per ADS: Denominator used for losses per ADS - basic 29,483,667 - 33,942,995 - 33,390,982 33,390,982 - - Denominator used for losses per ADS - diluted 38,599,021 - 41,487,276 - 40,831,012 40,831,012 - - Losses per ADS – basic (8.40) - (4.89) - (7.77) (7.77) - - Losses per ADS – diluted (8.40) - (4.89) - (7.77) (7.77) - -

FAIR VALUE MEASUREMENT (Tables)

FAIR VALUE MEASUREMENT (Tables)	12 Months Ended
	Dec. 31, 2017
FAIR VALUE MEASUREMENT [Abstract]
Summary of assets measured or disclosed at fair value	Assets measured or disclosed at fair value are summarized below: Fair value measurement Total fair Quoted Significant other Significant Total RMB RMB RMB RMB RMB Fair value disclosure Cash equivalents Fixed-rate investments 312,165 - 312,165 - - Adjustable-rate investments 223,000 - 223,000 - - Time deposits 804,692 - 804,692 - - Total 1,339,857 - 1,339,857 - - Fair value measurement Recurring Short-term investments Structured deposit (Note 5) 100,000 - 100,000 - - Available-for-sale investments 4,266 4,266 - - - Non-recurring Long-term investments - - - - (3,583) Total assets measured at fair value 104,266 4,266 100,000 - (3,583) Fair value measurement Recurring Contingent consideration payable 52,240 - - 52,240 - Total liabilities measured at fair value 52,240 - - 52,240 - Assets and liabilities measured or disclosed at fair value are summarized below: Fair value measurement Total fair Quoted prices Significant Significant Total losses RMB US$ RMB RMB RMB RMB US$ Fair value disclosure Cash equivalents Fixed-rate investments 289,304 44,465 - 289,304 - - - Adjustable-rate investments 189,604 29,142 - 189,604 - - - Time deposits - - - - - - - Total 478,908 73,607 - 478,908 - - - Fair value measurement Recurring Short-term investments Structured deposit (Note 5) 120,000 18,444 - 120,000 - - - Available-for-sale investments - - - - - 733 113 Non-recurring Long-term investments - - - - - 28,781 4,424 Total assets measured at fair value 120,000 18,444 - 120,000 - 29,514 4,537 Fair value measurement Recurring Contingent consideration payable 54,550 8,384 - - 54,550 2,384 366 Total liabilities measured at fair value 54,550 8,384 - - 54,550 2,384 366
Significant unobservable inputs used in the fair value measurement and the corresponding impacts	Valuation Unobservable Estimation as of Change in Change in fair value Contingent consideration payable Monte Carlo simulation technique Spot value of net income 31,698 Increase / (decrease) Increase / (decrease) Volatility of net income 10.00 % Increase / (decrease) (Decrease) / increase Expected annual growth rate of net income 0.00 % Increase / (decrease) Increase / (decrease) Discount factor 0.95 Increase / (decrease) (Decrease) / increase
Reconciliation of liabilities measured at fair value on a recurring basis using significant unobservable inputs	Contingent consideration payable RMB Balance as of December 31, 2015 - Recognized during the year 52,240 Balance as of December 31, 2016 52,240 Recognized during the year 2,310 Balance as of December 31, 2017 54,550 Balance as of December 31, 2017 in US$ 8,384

SEGMENT REPORTING (Tables)

SEGMENT REPORTING (Tables)	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	For the years ended December 31, 2016 PRC Europe Total RMB RMB RMB Net Revenues 10,928 - 10,928 Depreciation and Amortization 19,711 - 18,995 Operating (loss) (366,562) - (366,562) Interest income 23,859 - 23,859 Interest expense - - - Income tax expense 3,057 - 3,057 Segment net (loss) (209,252) - (209,252) Segment assets 2,076,892 - 2,076,892 For the years ended December 31, 2017 PRC Europe Total Total RMB RMB RMB US$ Net Revenues 81,953 49,370 131,323 20,184 Depreciation and Amortization 37,158 2,344 39,502 6,071 Operating (loss) income (353,623) 2,755 (350,868) (53,928) Interest income 20,574 - 20,574 3,162 Interest expense - - - - Income tax expense (benefit) (12,522) 156 (12,366) (1,901) Segment net (loss) income (319,101) 2,959 (316,142) (48,590) Segment assets 1,696,024 58,535 1,754,559 269,669

SUBSEQUENT EVENTS (Tables)

SUBSEQUENT EVENTS (Tables)	12 Months Ended
	Dec. 31, 2017
Qufan Cayman and Shenzhen Qufan [Member]
Subsequent Event [Line Items]
Business Acquisition, Pro Forma Information	The following unaudited pro forma information summarizes the results of operations of Qufan. For the years ended December 31 2016 2017 2017 RMB RMB US$ Pro forma total revenues 5,669 59,465 9,140 Pro forma net income 706 15,328 2,356 Pro forma net income attributable to 500.com Limited 360 7,817 1,201

CONDENSED FINANCIAL INFORMATI46

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY (Tables) - Parent Company [Member]	12 Months Ended
	Dec. 31, 2017
Schedule of Condensed Balance Sheets	As of As of As of RMB RMB US$ ASSETS Current assets: Cash and cash equivalents 341,671 1,304 200 Time deposits 700,637 - - Other current assets 23,728 20,257 3,113 Amounts due from intergroup companies 194,117 400,659 61,580 Total current assets 1,260,153 422,220 64,893 Non-current assets: Investment in subsidiaries and VIEs 566,267 1,060,273 162,961 Property and equipment, net 343 241 37 Total non-current assets 566,610 1,060,514 162,998 TOTAL ASSETS 1,826,763 1,482,734 227,891 As of As of As of RMB RMB US$ LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Accrued payroll and welfare payable 43 544 84 Accrued expenses and other liabilities 112,548 68,015 10,453 Amounts due to intergroup companies 4,641 4,401 676 Total current liabilities 117,232 72,960 11,213 TOTAL LIABILITIES 117,232 72,960 11,213 Shareholders’ equity: Class A Ordinary shares, par value US$0.00005 per share, 700,000,000 shares authorized as of December 31, 2016 and 2017; 335,494,792 and 333,787,552 shares issued and outstanding as of December 31, 2016 and 2017, respectively 115 115 17 Class B Ordinary shares, par value US$0.00005 per share; 300,000,000 shares authorized as of December 31, 2016 and 2017; 74,400,299 and 74,400,299 shares issued and outstanding as of December 31,2016 and 2017, respectively 28 28 4 Additional paid-in capital 2,198,385 2,295,111 352,753 Treasury shares (123,258) (143,780) (22,099) Accumulated other comprehensive income 172,589 116,051 17,837 Accumulated deficit and statutory reserve (538,328) (857,751) (131,834) Total shareholder’s equity 1,709,531 1,409,774 216,678 TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY 1,826,763 1,482,734 227,891
Schedule of Condensed Statements of Comprehensive Income (loss)	For the years ended December 31, 2015 2016 2017 2017 RMB RMB RMB US$ Net Revenues - - - - Operating expenses: Sales and marketing (330) (402) (497) (76) General and administrative (13,160) (15,934) (68,260) (10,491) Total operating expenses (13,490) (16,336) (68,757) (10,567) Indemnity cost - (9,979) - - Other operating income - 39 - - Operating loss (13,490) (26,276) (68,757) (10,567) Interest income 8,703 10,269 4,818 741 Equity in (loss) profits of subsidiaries and VIEs (319,110) (186,958) (253,160) (38,911) Loss before income tax (323,897) (202,965) (317,099) (48,737) Income tax benefit - - - - Net loss (323,897) (202,965) (317,099) (48,737) Other comprehensive income Foreign currency translation gain (loss) 66,851 82,347 (56,196) (8,637) Change in fair value of AFS - - (733) (113) Comprehensive loss (257,046) (120,618) (374,028) (57,487)
Schedule of Condensed Statements of Cash Flows	For the years ended December 31, 2015 2016 2017 2017 RMB RMB RMB US$ Net cash (used in) provided by operating activities (2,266) 25,679 (270,965) (41,647) Net cash (used in) provided by investing activities (865,971) 413,401 3,065 471 Net cash provided by (used in) financing activities 748,755 (118,484) (11,945) (1,836) Effect of exchange rate changes on cash and cash equivalents 46,328 481 (60,522) (9,302) Net (decrease) increase in cash and cash equivalents (73,154) 321,077 (340,367) (52,314) Cash and cash equivalents at beginning of the year 93,748 20,594 341,671 52,514 Cash and cash equivalents at end of the year 20,594 341,671 1,304 200

ORGANIZATION (Schedule of Varia

ORGANIZATION (Schedule of Variable Interest Entity) (Details)	12 Months Ended
	Dec. 31, 2017
BVI [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Feb. 9, 2011
Place of establishment	British Virgin Islands
Percentage of ownership by the Company	100.00%
Principal activities	Investment Holding
500wan HK [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Mar. 8, 2011
Place of establishment	Hong Kong
Percentage of ownership by the Company	100.00%
Principal activities	Investment Holding
500.com USA [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jul. 21, 2014
Place of establishment	USA
Percentage of ownership by the Company	100.00%
Principal activities	Investment Holding
500.com UK [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Aug. 5, 2016
Place of establishment	UK
Percentage of ownership by the Company	100.00%
Principal activities	Investment Holding
E-Sun Sky Computer [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jun. 18, 2007
Place of establishment	PRC
Percentage of ownership by the Company	100.00%
Principal activities	Software Service
Guangyi Network [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Aug. 5, 2015
Place of establishment	PRC
Percentage of ownership by the Company	100.00%
Principal activities	Software Service
Qufan Cayman [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Sep. 30, 2016
Place of establishment	Cayman
Percentage of ownership by the Company	51.00%
Principal activities	Investment Holding
Qufan HK [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Oct. 18, 2016	[1]
Place of establishment	Hong Kong	[1]
Percentage of ownership by the Company	51.00%	[1]
Principal activities	Investment Holding	[1]
E-Sun Network [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Dec. 7, 1999
Place of establishment	PRC
Percentage of ownership by the Company	0.00%
Principal activities	Online Lottery Service
Youlanguang Technology [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Dec. 16, 2008
Place of establishment	PRC
Percentage of ownership by the Company	0.00%
Principal activities	Online Lottery Service
Guangtiandi Technology [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Dec. 16, 2008
Place of establishment	PRC
Percentage of ownership by the Company	0.00%
Principal activities	Online Lottery Service
Tongfu Technology [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Aug. 28, 2015
Place of establishment	PRC
Percentage of ownership by the Company	0.00%
Principal activities	Third party payment service
E-Sun Sky Network [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	May 22, 2006	[2]
Place of establishment	PRC	[2]
Percentage of ownership by the Company	0.00%	[2]
Principal activities	Online Lottery Service	[2]
500Fu [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Apr. 23, 2014	[3]
Place of establishment	PRC	[3]
Percentage of ownership by the Company	0.00%	[3]
Principal activities	Third party payment service	[3]
Lhasa Yicai [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Oct. 17, 2014	[4]
Place of establishment	PRC	[4]
Percentage of ownership by the Company	0.00%	[4]
Principal activities	Online Lottery Service	[4]
Shenzhen Yicai [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jul. 21, 2015	[3]
Place of establishment	PRC	[3]
Percentage of ownership by the Company	0.00%	[3]
Principal activities	Online Lottery Service	[3]
Shenzhen Fenggu [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Aug. 27, 2015	[5]
Place of establishment	PRC	[5]
Percentage of ownership by the Company	0.00%	[5]
Principal activities	Online Lottery Service	[5]
Baifengrun Technology [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Sep. 13, 2011	[6]
Place of establishment	PRC	[6]
Percentage of ownership by the Company	0.00%	[6]
Principal activities	Development, operation of Online Gaming	[6]
Shenzhen Kaisheng [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jun. 24, 2016	[6]
Place of establishment	PRC	[6]
Percentage of ownership by the Company	0.00%	[6]
Principal activities	Online Spot Commodity Trading Services	[6]
Shenzhen Qufan [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Sep. 13, 2013	[6]
Place of establishment	PRC	[6]
Percentage of ownership by the Company	0.00%	[6]
Principal activities	Mobile Gaming	[6]
Qufan Internet Technology Malta Limited Qufan Malta” [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Aug. 4, 2017	[1]
Place of establishment	Malta	[1]
Percentage of ownership by the Company	51.00%	[1]
Principal activities	Online Gaming Service	[1]
Qufan Information Technology Shenzhen Co., Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jan. 5, 2017	[1]
Place of establishment	PRC	[1]
Percentage of ownership by the Company	51.00%	[1]
Principal activities	Software Service	[1]
500.com Nihon Co.,Ltd. (“500.com JP”) [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jul. 27, 2017
Place of establishment	Japan
Percentage of ownership by the Company	100.00%
Principal activities	Investment Holding
The Muliti Group Ltd The Multi Group” [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jun. 26, 2015
Place of establishment	Malta
Percentage of ownership by the Company	93.00%
Principal activities	Investment Holding
Beijing Daguo Xiaoxian Culture Media Co., Ltd [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jul. 24, 2014	[7]
Place of establishment	PRC	[7]
Percentage of ownership by the Company	0.00%	[7]
Principal activities	Investment Holding	[7]
Multi Warehouse Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Dec. 3, 2014	[8]
Place of establishment	Malta	[8]
Percentage of ownership by the Company	93.00%	[8]
Principal activities	Online Gaming	[8]
Multi Brand Gaming Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Oct. 3, 2014	[8]
Place of establishment	Malta	[8]
Percentage of ownership by the Company	93.00%	[8]
Principal activities	Online Gaming	[8]
Multilotto UK Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Sep. 1, 2016	[8]
Place of establishment	Malta	[8]
Percentage of ownership by the Company	93.00%	[8]
Principal activities	Online Gaming	[8]
Lotto Warehouse Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Sep. 1, 2016	[8]
Place of establishment	Malta	[8]
Percentage of ownership by the Company	93.00%	[8]
Principal activities	Online Gaming	[8]
Wasp Media Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Aug. 12, 2016	[8]
Place of establishment	Malta	[8]
Percentage of ownership by the Company	93.00%	[8]
Principal activities	Online Gaming	[8]
Round Spot Services Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	May 6, 2015	[8]
Place of establishment	Cyprus	[8]
Percentage of ownership by the Company	93.00%	[8]
Principal activities	Online Gaming	[8]
Multi Pay N.V [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Aug. 25, 2011	[8]
Place of establishment	Curacao	[8]
Percentage of ownership by the Company	93.00%	[8]
Principal activities	Online Gaming	[8]
Multilotto Australia PTY Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Dec. 13, 2016	[8]
Place of establishment	Australia	[8]
Percentage of ownership by the Company	93.00%	[8]
Principal activities	Online Gaming	[8]
[1]	A subsidiary of Qufan Cayman
[2]	A subsidiary of E-Sun Network
[3]	A subsidiary of Youlanguang Technology
[4]	A subsidiary of E-Sun Sky Network
[5]	A subsidiary of Shenzhen Yicai
[6]	A subsidiary of Guangtiandi Technology
[7]	A subsidiary of Shenzhen Qufan
[8]	A subsidiary of The Multi Group

ORGANIZATION (Carrying Amounts

ORGANIZATION (Carrying Amounts of Assets and Liabilities of VIEs) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2016USD ($)	Dec. 31, 2015CNY (¥)	Dec. 31, 2014CNY (¥)
Current assets:
Cash and cash equivalents	¥ 529,124	$ 81,325	¥ 673,102	$ 103,454	¥ 400,657	¥ 485,556
Restricted cash	1,238	190	3,704
Short-term investments	120,000	18,444	100,000
Prepayments and other receivables	74,049	11,379	125,534
Total current assets	737,022	113,276	1,707,032
Non-current assets:
Property and equipment, net	106,991	16,444	53,935
Intangible assets, net	291,086	44,739	61,547	$ 44,739
Deposits	5,764	886	5,810
Long-term investments	347,073	53,344	85,459
Other non-current assets	6,257	962	2,671
Goodwill	260,366	40,018	160,438
Total non-current assets	1,017,537	156,393	369,860
TOTAL ASSETS	1,754,559	269,669	2,076,892
Current liabilities:
Accrued payroll and welfare payable	16,683	2,564	16,270
Accrued expenses and other current liabilities	152,337	23,414	184,155
Income tax payable	6,917	1,063	9,050
Total current liabilities	175,937	27,041	209,475
Non-current liabilities:
Deferred tax liability, non-current	19,475	2,993	14,902
Long-term payables	27,785	4,270	44,472
Total non-current liabilities	47,260	7,263	59,374
TOTAL LIABILITIES	223,197	34,304	268,849
Variable Interest Entity, Primary Beneficiary [Member]
Current assets:
Cash and cash equivalents	101,023	15,527	257,001
Restricted cash	1,237	190	3,703
Short-term investments	20,000	3,074	0
Amounts due from intergroup companies	2,562	394	1,589
Prepayments and other receivables	38,016	5,843	109,032
Total current assets	162,838	25,028	371,325
Non-current assets:
Property and equipment, net	100,627	15,466	46,986
Intangible assets, net	49,558	7,617	60,408
Deposits	4,254	654	4,397
Long-term investments	53,044	8,153	53,995
Other non-current assets	6,296	968	2,671
Goodwill	130,613	20,075	160,438
Total non-current assets	344,392	52,933	328,895
TOTAL ASSETS	507,230	77,961	700,220
Current liabilities:
Amounts due to intergroup companies	71,168	10,938	69,423
Accrued payroll and welfare payable	14,703	2,260	15,846
Accrued expenses and other current liabilities	57,761	8,878	67,166
Income tax payable	5,310	816	8,897
Total current liabilities	148,942	22,892	161,332
Non-current liabilities:
Deferred tax liability, non-current	12,721	1,955	14,902
Long-term payables	27,673	4,253	42,705
Total non-current liabilities	40,394	6,208	57,607
TOTAL LIABILITIES	¥ 189,336	$ 29,100	¥ 218,939

ORGANIZATION (Results of Operat

ORGANIZATION (Results of Operations of VIEs) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)
Variable Interest Entity [Line Items]
Net revenues	¥ 131,323	$ 20,184	¥ 10,928	¥ 99,552
Net loss	(316,142)	(48,590)	(209,252)	(324,209)
VIEs [Member]
Variable Interest Entity [Line Items]
Net revenues	81,954	12,596	10,928	87,065
Net loss	(124,034)	(19,064)	(8,851)	(130,330)
Net cash (used in) operating activities	(162,328)	(24,949)	(50,876)	(83,113)
Net cash (used in) provided by investing activities	6,350	976	166,222	(105,922)
Net cash (used in) provided by financing activities	¥ 0	$ 0		¥ 0

SUMMARY OF SIGNIFICANT ACCOUN50

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Property and Equipment) (Details)	12 Months Ended
	Dec. 31, 2017
Electronics and office equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated Residual, Percentage	5.00%
Electronics and office equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Electronics and office equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years
Motor vehicles [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years
Estimated Residual, Percentage	2.00%
Motor vehicles [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	10 years
Estimated Residual, Percentage	5.00%
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Leasehold improvements, Estimated Useful Life	Shorter of lease term or the estimated useful lives of the assets
Estimated Residual, Percentage	0.00%

SUMMARY OF SIGNIFICANT ACCOUN51

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Estimated Useful Lives of Intangible Assets) (Details)	12 Months Ended
	Dec. 31, 2017
Computer software [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	3 years
Computer software [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years
Internet domain name [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years
License agreement [Member]
Finite-Lived Intangible Assets [Line Items]
License agreement, Estimated Useful Life	Agreement term
Online payment and other licenses, brand name [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years
Online payment and other licenses, brand name [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	15 years
Mobile applications and software [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years

SUMMARY OF SIGNIFICANT ACCOUN52

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) ¥ in Thousands, $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)	Dec. 29, 2017	Jul. 17, 2017
Summary Of Accounting Policies [Line Items]
Currency exchange rate								7.7514
Cash and cash equivalents, maturities			three months or less	three months or less
Time deposits, maturity			greater than three months but less than a year	greater than three months but less than a year
Investment Income Interest			¥ 20,574	$ 3,162	¥ 23,859	¥ 20,589
Advertising costs			¥ 967	$ 149	347	26,192
Capital lease terms			For the lessee, a lease is a capital lease if any of the following conditions exist: a) ownership is transferred to the lessee by the end of the lease term, b) there is a bargain purchase option, c) the lease term is at least 75% of the properties estimated remaining economic life or d) the present value of the minimum lease payments at the beginning of the lease term is 90% or more of the fair value of the leased property to the lessor at the inception date.	For the lessee, a lease is a capital lease if any of the following conditions exist: a) ownership is transferred to the lessee by the end of the lease term, b) there is a bargain purchase option, c) the lease term is at least 75% of the properties estimated remaining economic life or d) the present value of the minimum lease payments at the beginning of the lease term is 90% or more of the fair value of the leased property to the lessor at the inception date.
Income Tax Examination, Likelihood of Unfavorable Settlement			tax position if a tax return position or future tax position is more likely than not to be sustained upon examination based solely on the technical merits of the position. Tax positions that meet the more likely than not recognition threshold are measured at the largest amount of tax benefit, determined on a cumulative probability basis, that has a greater than fifty percent likelihood of being realized upon settlement.	tax position if a tax return position or future tax position is more likely than not to be sustained upon examination based solely on the technical merits of the position. Tax positions that meet the more likely than not recognition threshold are measured at the largest amount of tax benefit, determined on a cumulative probability basis, that has a greater than fifty percent likelihood of being realized upon settlement.
Other than Temporary Impairment Losses, Investments	¥ 28,800	$ 4,400	¥ 28,781	$ 4,424	3,440	5,000
Account Handling Expenses			3,700	600	700	7,000
Server Leasing and Maintenance Expenses			9,200	1,400	8,300	7,600
Lottery Insurance Expenses			7,000	1,100
Platform Fee			5,900	900
Regulatory and compliance Fees			600	100
Amortization Of Intangible Assets			26,102	$ 4,012	¥ 6,846	¥ 1,361
Cost of Services [Member]
Summary Of Accounting Policies [Line Items]
Business tax and surcharges			¥ 0
China, Yuan Renminbi [Member]
Summary Of Accounting Policies [Line Items]
Currency exchange rate							6.5063
United States of America, Dollars [Member]
Summary Of Accounting Policies [Line Items]
Currency exchange rate							1

CONCENTRATION OF RISKS (Narrati

CONCENTRATION OF RISKS (Narrative) (Details)	Apr. 03, 2015	Oct. 31, 2012
Concentration Risk [Line Items]
Number of entities approved by the MOF to conduct online sales of sports lottery products		2
Number of competent government authorities who jointly released a public bulletin with regard to online lottery sales	8

BUSINESS COMBINATION (Summary o

BUSINESS COMBINATION (Summary of Fair Values of Assets Acquired and Liabilities) (Details) € in Thousands, ¥ in Thousands, $ in Thousands		1 Months Ended		12 Months Ended
		Jul. 17, 2017USD ($)	Jul. 17, 2017EUR (€)	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2017EUR (€)	Dec. 31, 2017USD ($)	Dec. 31, 2017EUR (€)	Dec. 31, 2016CNY (¥)
Goodwill				¥ 260,366			$ 40,018		¥ 160,438
Multi Group [Member]
Others				55,159			8,478	€ 7,116
Total identifiable assets acquired				298,553			45,887	38,516
Deferred tax liabilities				(9,023)			(1,694)	(1,164)
Other current liabilities				(11,022)			(1,387)	(1,422)
Total liabilities assumed				(20,045)			(3,081)	(2,586)
Net identifiable assets acquired				278,508			42,805	35,930
Noncontrolling interests	[1]			22,595			3,473	2,915
Total Consideration		$ 59,900	€ 49,800	385,662	$ 59,275	€ 49,754
Goodwill				129,749			19,943	16,739
License [Member] | Multi Group [Member]
Business Combination, Finite-Lived Intangibles				¥ 150,377			23,113	19,400
Amortization Years				10 years	10 years	10 years
Brand name [Member] | Multi Group [Member]
Business Combination, Finite-Lived Intangibles				¥ 86,041			13,224	11,100
Amortization Years				10 years	10 years	10 years
Software [Member] | Multi Group [Member]
Business Combination, Finite-Lived Intangibles				¥ 6,976			$ 1,072	€ 900
Amortization Years				5 years	5 years	5 years
[1]	In accordance with the acquisition agreement, the Group is obligated to purchase the remaining 7% equity interest of The Multi Group at the option of the non-controlling shareholder, which is outside the control of the Group (upon the occurrence of an event that is not solely within the control of the issuer). As such, the noncontrolling interest relating to this portion of put options is presented as redeemable noncontrolling interest in mezzanine equity and be initially measured at its fair value in accordance with ASC 480-10-S99-3A.

BUSINESS COMBINATION (Carrying

BUSINESS COMBINATION (Carrying Value of Noncontrolling Interest) (Details) € in Thousands, ¥ in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2017EUR (€)	Dec. 31, 2017USD ($)	Dec. 31, 2017EUR (€)	Dec. 31, 2016CNY (¥)
Redeemable noncontrolling interest		¥ 22,052			$ 3,389		¥ 0
Multi Group [Member]
Noncontrolling interest-valuation	[1]	2,915			22,595	€ 3,472
Total comprehensive income attributable to noncontrolling interest		(70)	$ (543)	€ (83)
Redeemable noncontrolling interest		¥ 2,845			$ 22,052	€ 3,389
[1]	Noncontrolling interest in EUR was evaluated by third party appraiser as of the acquisition day. The calculation of RMB amount was based on the exchange rate of 1.00 EUR to 7.7514 RMB at the acquisition date.

BUSINESS COMBINATION (Schedule

BUSINESS COMBINATION (Schedule of acquired intangible assets have weighted average economic lives) (Details) - Multi Group [Member]	12 Months Ended
	Dec. 31, 2017
License [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average lives	10 years
Brand name [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average lives	10 years
Software [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average lives	5 years

BUSINESS COMBINATION (Summary57

BUSINESS COMBINATION (Summary of Unaudited Pro forma Information) (Details) € in Thousands, ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2017EUR (€)	Dec. 31, 2016CNY (¥)	Dec. 31, 2016EUR (€)	Dec. 31, 2015CNY (¥)
Qufan [Member]
Business combination [Line Items]
Pro forma total revenues		$ 3,943		¥ 27,379		¥ 99,921
Pro forma net income (loss)		(31,306)		(217,359)		(333,814)
Pro forma net income (loss) attributable to 500.com Limited		(30,235)		(209,921)		¥ (328,795)
Multi Group [Member]
Business combination [Line Items]
Pro forma total revenues	¥ 93,334	14,345	€ 12,188	76,893	€ 11,686
Pro forma net income (loss)	(12,360)	(1,900)	(1,614)	16,576	2,519
Pro forma net income (loss) attributable to 500.com Limited	¥ (11,495)	$ (1,767)	€ (1,501)	¥ 15,416	€ 2,343

BUSINESS COMBINATION (Schedul58

BUSINESS COMBINATION (Schedule of Fair Value of Consideration Transferred at Acquisition Date) (Details) - Qufan [Member] - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Fair value of consideration transferred
Cash consideration	¥ 52,760	¥ 510
Contingent consideration	52,240	¥ 52,240
Total Consideration	¥ 105,000

BUSINESS COMBINATION (Summary59

BUSINESS COMBINATION (Summary of Fair Values of Assets Acquired and Liabilities Assumed at Acquisition Date) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Nov. 25, 2016CNY (¥)
Business combination [Line Items]
Goodwill	¥ 260,366	$ 40,018	¥ 160,438
Qufan [Member]
Business combination [Line Items]
Cash	439
Mobile applications	60,200
Other receivables	37,863
Total identifiable assets acquired	98,502
Deferred tax liabilities	(15,050)
Other current liabilities	(10,281)
Total liabilities assumed	(25,331)
Net identifiable assets acquired	73,171
Noncontrolling interests	98,784			¥ 98,784
Total Consideration	105,000
Goodwill	¥ 130,613
Amortization Years	5 years
Shenzhen Caiyu [Member]
Business combination [Line Items]
Cash	¥ 700
Other receivables	635
Total identifiable assets acquired	1,335
Other current liabilities	(2,660)
Total liabilities assumed	(2,660)
Net identifiable assets acquired	(1,325)
Total Consideration	1,000
Goodwill	¥ 2,325

BUSINESS COMBINATION (Narrative

BUSINESS COMBINATION (Narrative) (Details) € in Thousands, ¥ in Thousands, $ in Thousands		May 08, 2017CNY (¥)	Jul. 17, 2017USD ($)	Jul. 17, 2017EUR (€)	Nov. 25, 2016CNY (¥)	Jul. 25, 2016CNY (¥)	Dec. 31, 2017CNY (¥)	Dec. 31, 2017EUR (€)	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2017EUR (€)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2017EUR (€)
Business combination [Line Items]
Long-term sustainable growth rate (as a percent)									0.00%	0.00%	0.00%
Fair Value Assumptions, Expected Volatility Rate									10.00%	10.00%	10.00%
Gain (Loss) on Disposition of Stock in Subsidiary									¥ 5,477	$ 842		¥ 136,914	¥ 0
Foreign Currency Exchange Rate Translation 1			7.7514	7.7514
Mobile Applications [Member]
Business combination [Line Items]
Finite Lived Intangible Asset Useful Life									5 years	5 years	5 years
Sumpay.cn [Member]
Business combination [Line Items]
Business Combination, Consideration Transferred									¥ 105,000
Qufan [Member]
Business combination [Line Items]
Percentage of voting interests acquired					51.00%
Ownership percentage					49.00%
Discount rate (as a percent)					29.00%
Long-term sustainable growth rate (as a percent)					3.00%
Fair value of the contingent consideration									52,240			52,240
Contributed revenues to the Group									59,465	$ 9,140		5,669
Contributed losses to the Group									15,328	$ 2,356		706
Payments to Acquire Businesses, Gross									52,760			510
Business Combination, Consideration Transferred									105,000
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value					¥ 98,784		¥ 98,784		¥ 98,784
Fair Value Inputs, Long-term Revenue Inflation Rate					3.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners					49.00%
Finite Lived Intangible Asset Useful Life									5 years	5 years	5 years
Qufan [Member] | Mobile Applications [Member]
Business combination [Line Items]
Finite Lived Intangible Asset Useful Life									5 years	5 years	5 years
Qufan [Member] | Accrued Expenses And Other Current Liabilities [Member]
Business combination [Line Items]
Fair value of the contingent consideration												52,250
Business Combination, Contingent Consideration, Liability												52,240
Qufan [Member] | General And Administrative Expense [Member]
Business combination [Line Items]
Acquisition-related costs									¥ 2,661
Shenzhen Caiyu [Member]
Business combination [Line Items]
Percentage of voting interests acquired						100.00%
Contributed revenues to the Group									10,897	$ 1,675		1,792
Contributed losses to the Group									94	$ 14		¥ 424
Payments to Acquire Businesses, Gross						¥ 1,000
Qufan Cayman [Member]
Business combination [Line Items]
Fair value of the contingent consideration									¥ 57,840
Shenzhen Qufan Internet Technology Co., Ltd [Member]
Business combination [Line Items]
Payments to Acquire Businesses, Gross					¥ 110,500
Daguoxiaoxian [Member]
Business combination [Line Items]
Percentage of voting interests acquired		70.00%
Business Combination, Consideration Transferred		¥ 2,000
The Multi Group [Member]
Business combination [Line Items]
Percentage of voting interests acquired			93.00%	93.00%
Ownership percentage							7.00%		7.00%					7.00%	7.00%
Discount rate (as a percent)									16.00%	16.00%	16.00%
Long-term sustainable growth rate (as a percent)									2.00%	2.00%	2.00%
Contributed revenues to the Group							¥ 49,370	€ 6,447
Payments to Acquire Businesses, Gross | €				€ 49,754
Business Combination, Consideration Transferred			$ 59,900	€ 49,800					¥ 385,662	$ 59,275	€ 49,754
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value	[1]						¥ 22,595		¥ 22,595					$ 3,473	€ 2,915
Noncontrolling Interest, Ownership Percentage by Parent							7.00%		7.00%					7.00%	7.00%
Fair Value Assumptions, Expected Volatility Rate									3.00%	3.00%	3.00%
Business Combination, Separately Recognized Transactions, Net Gains and Losses							¥ 2,959	€ 386
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners							7.00%		7.00%					7.00%	7.00%
The Multi Group [Member] | General And Administrative Expense [Member]
Business combination [Line Items]
Acquisition-related costs | $										$ 2,884
[1]	In accordance with the acquisition agreement, the Group is obligated to purchase the remaining 7% equity interest of The Multi Group at the option of the non-controlling shareholder, which is outside the control of the Group (upon the occurrence of an event that is not solely within the control of the issuer). As such, the noncontrolling interest relating to this portion of put options is presented as redeemable noncontrolling interest in mezzanine equity and be initially measured at its fair value in accordance with ASC 480-10-S99-3A.

INVESTMENTS (Schedule of Invest

INVESTMENTS (Schedule of Investments Categorized by Investment Class) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)	Dec. 31, 2017USD ($)
Cost method and equity method investments
Loss from equity method investment	¥ (2,128)	$ (327)	¥ (406)	¥ (407)
Change in fair value of available-for- sale investments	(733)	(113)	754	¥ 0
Total carrying amount of long-term investments	347,073		85,459		$ 53,344
Available-for-sale Securities [Member]
Cost method and equity method investments
Carrying amount of available-for-sale investments	0		4,266		0
Available-for-sale investments	0		3,512		0
Change in fair value of available-for- sale investments	0	0	754
Cost Method Investments [Member]
Cost method and equity method investments
Cost of cost method investments	69,504		64,293		10,682
Impairment loss on equity investment	(3,267)	(502)	(8,583)
Carrying amount of cost method investments	66,237		55,710		10,180
Equity Method Investments [Member]
Cost method and equity method investments
Cost of equity method investments	310,986		26,296		47,798
Impairment loss on equity investment	(27,893)	(4,287)	0
Loss from equity method investment	(2,257)	$ (347)	(813)
Carrying amount of available-for-sale investments	280,836		25,483		43,164
Private company [Member] | Cost Method Investments [Member]
Cost method and equity method investments
Cost of cost method investments	47,214		45,156		7,256
Private company [Member] | Equity Method Investments [Member]
Cost method and equity method investments
Cost of equity method investments	0		5,500		0
Limited partnership [Member] | Cost Method Investments [Member]
Cost method and equity method investments
Cost of cost method investments	22,290		19,137		3,426
Limited partnership [Member] | Equity Method Investments [Member]
Cost method and equity method investments
Cost of equity method investments	27,331		20,796		4,201
Listed Company [Member] | Equity Method Investments [Member]
Cost method and equity method investments
Cost of equity method investments	¥ 283,655		¥ 0		$ 43,597

INVESTMENTS (Narrative) (Detail

INVESTMENTS (Narrative) (Details) $ / shares in Units, ¥ in Thousands, $ in Thousands, $ in Millions

1 Months Ended

12 Months Ended

Sep. 30, 2017

Jul. 31, 2017

Jun. 30, 2017CNY (¥)shares

Jun. 30, 2017USD ($)shares

May 31, 2017USD ($)

Mar. 31, 2017CNY (¥)

Mar. 31, 2017USD ($)

Nov. 30, 2016USD ($)

Jun. 30, 2016CNY (¥)

Mar. 31, 2016

Aug. 31, 2015CNY (¥)

Mar. 31, 2015USD ($)

Jun. 30, 2014USD ($)

Apr. 30, 2014CNY (¥)

Jan. 31, 2014CNY (¥)

Dec. 31, 2017CNY (¥)

Dec. 31, 2017USD ($)

Dec. 31, 2016CNY (¥)

Dec. 31, 2015CNY (¥)

Dec. 31, 2017USD ($)

Jun. 06, 2017USD ($)$ / shares

Jun. 06, 2017HKD ($)

Feb. 28, 2017

Dec. 31, 2016USD ($)

Apr. 30, 2016USD ($)

Aug. 31, 2015USD ($)

Jun. 30, 2015CNY (¥)

Apr. 30, 2015CNY (¥)

Investments [Line Items]

Income (Loss) from Equity Method Investments

¥ (2,128)

$ (327)

¥ (406)

¥ (407)

Increase in Principal of Structured Deposits

20,000

3,074

Structured Deposit [Member]

Investments [Line Items]

Held-to-maturity Securities, Fair Value

120,000

100,000

$ 18,444

Cost-method Investments [Member]

Investments [Line Items]

Amount of original cost of cost method investments

69,504

64,293

10,682

Amount of cost method investment

66,237

55,710

10,180

Cost-method Investments, Other than Temporary Impairment

3,267

502

8,583

Cost Method Investments

66,237

55,710

10,180

Private company [Member] | Cost-method Investments [Member]

Investments [Line Items]

Amount of original cost of cost method investments

47,214

45,156

7,256

Private company [Member] | Xibianyuan [Member]

Investments [Line Items]

Percentage of equity method investments

19.00%

Amount of original cost of equity method investments

¥ 5,500

Equity Method Investment, Ownership Percentage

19.00%

Gain on Sale of Investments

¥ 608

$ 93

Limited partnership [Member] | Cost-method Investments [Member]

Investments [Line Items]

Amount of original cost of cost method investments

22,290

19,137

$ 3,426

Limited partnership [Member] | Guangda Sports Culture [Member]

Investments [Line Items]

Percentage of equity method investments

9.90%

Amount of equity method investment

20,000

Equity Method Investment, Ownership Percentage

9.90%

Equity Method Investments

¥ 20,000

Income (Loss) from Equity Method Investments

341

52

Huanlelingdang [Member] | Private company [Member]

Investments [Line Items]

Percentage of cost method investments

20.00%

Amount of original cost of cost method investments

¥ 5,000

Percentage of Cost Method Investments Original Cost

20.00%

Huanlelingdang [Member] | Private company [Member] | Cost-method Investments [Member]

Investments [Line Items]

Proceeds from Sale, Maturity and Collection of Investments

¥ 302

$ 46

Hewei [Member] | Private company [Member]

Investments [Line Items]

Percentage of cost method investments

19.00%

Amount of original cost of cost method investments

¥ 114

Percentage of Cost Method Investments Original Cost

19.00%

Hzone Holiding Company [Member] | Private company [Member]

Investments [Line Items]

Percentage of cost method investments

10.00%

10.00%

Amount of original cost of cost method investments | $

$ 2,000

Percentage of Cost Method Investments Original Cost

10.00%

10.00%

Big Stomach Limited [Member]

Investments [Line Items]

Cost-method Investments, Other than Temporary Impairment

3,469

Big Stomach Limited [Member] | Private company [Member]

Investments [Line Items]

Percentage of cost method investments

2.00%

Amount of original cost of cost method investments | $

$ 500

Percentage of Cost Method Investments Original Cost

2.00%

Topgame Global Limited [Member] | Private company [Member]

Investments [Line Items]

Percentage of cost method investments

1.29%

Amount of original cost of cost method investments | $

$ 1,373

Percentage of Cost Method Investments Original Cost

1.29%

Caicaihudong (Beijing) Technology Co., Ltd [Member] | Private company [Member]

Investments [Line Items]

Percentage of cost method investments

1.29%

Amount of original cost of cost method investments

¥ 13

Percentage of Cost Method Investments Original Cost

1.29%

Youwang Technology (Shanghai) Co., Ltd. [Member] | Private company [Member]

Investments [Line Items]

Amount of original cost of cost method investments

¥ 477

Danhua [Member] | Limited partnership [Member]

Investments [Line Items]

Percentage of cost method investments

1.10%

Amount of original cost of cost method investments | $

$ 1,000

Percentage of Cost Method Investments Original Cost

1.10%

Heimatuoxin [Member] | Limited partnership [Member]

Investments [Line Items]

Amount of original cost of cost method investments

¥ 3,000

Amount of cost method investment

707

Cost Method Investments

707

Beijing Weisaishidai Sports Technology Co., Ltd [Member]

Investments [Line Items]

Percentage of cost method investments

0.84%

Amount of original cost of cost method investments

¥ 10,000

Percentage of Cost Method Investments Original Cost

0.84%

Techelix Co., Ltd [Member] | Private company [Member]

Investments [Line Items]

Percentage of cost method investments

2.00%

Amount of original cost of cost method investments | $

$ 600

Percentage of Cost Method Investments Original Cost

2.00%

Jingyan [Member] | Limited partnership [Member]

Investments [Line Items]

Percentage of cost method investments

4.45%

Amount of original cost of cost method investments

¥ 6,000

Amount of cost method investment

4,020

Percentage of Cost Method Investments Original Cost

4.45%

Cost Method Investments

4,020

zPark [Member] | Limited partnership [Member]

Investments [Line Items]

Percentage of cost method investments

1.78%

Amount of original cost of cost method investments | $

$ 1,000

Percentage of Cost Method Investments Original Cost

1.78%

Yintech Investment Holdings Limited [Member]

Investments [Line Items]

Amount of original cost of equity method investments | $

$ 506

Proceeds from Sale of Available-for-sale Securities | $

$ 118

Hewei Technology Co., Ltd. [Member]

Investments [Line Items]

Cost-method Investments, Other than Temporary Impairment

¥ 114

Cheerful Interactive Limited [Member]

Investments [Line Items]

Percentage of cost method investments

5.00%

5.00%

Amount of cost method investment | $

$ 1,250

Percentage of Cost Method Investments Original Cost

5.00%

5.00%

Cost Method Investments | $

$ 1,250

Loto Interactive Limited [Member] | Limited partnership [Member]

Investments [Line Items]

Equity Method Investment, Other than Temporary Impairment

28,781

4,424

Income (Loss) from Equity Method Investments

2,128

327

Loto Interactive Limited [Member] | Listed Company [Member]

Investments [Line Items]

Percentage of equity method investments

40.65%

40.65%

Amount of equity method investment

$ 41,300

$ 322.2

Equity Method Investment, Ownership Percentage

40.65%

40.65%

Equity Method Investments

$ 41,300

$ 322.2

Shares Issued, Price Per Share | $ / shares

$ 0.252

Loto Interactive Limited [Member] | Listed Company [Member] | The Sale Shares [Member]

Investments [Line Items]

Equity Method Investment, Shares Acquired | shares

1,278,714,329

1,278,714,329

Loto Interactive Limited [Member] | Publicly listed company [Member]

Investments [Line Items]

Income (Loss) from Equity Method Investments

2,469

$ 379

Sparkland Venture Capital Growth Fund L.P [Member] | Limited partnership [Member]

Investments [Line Items]

Percentage of equity method investments

6.67%

Amount of equity method investment

1,000

Equity Method Investment, Ownership Percentage

6.67%

Equity Method Investments

¥ 1,000

ACCOUNTS RECEIVABLE (Details)

ACCOUNTS RECEIVABLE (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)
Accounts receivable	¥ 19,847	$ 3,050	¥ 19,847
Less: Allowance for doubtful accounts	(19,847)	(3,050)	(19,847)
Accounts receivable, net	¥ 0	$ 0	¥ 0

PREPAYMENTS, OTHER RECEIVABLE64

PREPAYMENTS, OTHER RECEIVABLES AND DEPOSITS (Summary of Prepayments and Other Current Assets) (Details) ¥ in Thousands, $ in Thousands		Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)
Receivables from third party payment service providers		¥ 1,893	$ 291	¥ 13,450
Interest receivables		1,158	178	4,882
Deposit for share repurchase	[1]	13,318	2,047	16,557
Receivables of remaining consideration	[2]	0	0	71,820
Deferred sponsorship and advertising expenses		3,673	565	0
Prepaid Insurance		5,344	821	0
Deferred expense	[3]	15,063	2,315	0
Amounts due from intergroup companies	[4]	9,322	1,432	0
Other receivables		24,278	3,730	18,825
Deposits receivable from merchants		¥ 74,049	$ 11,379	¥ 125,534
[1]	Deposit for share repurchase represents cash paid in advance by the Group under the share repurchase program commenced in 2015. The Group has received this deposit in Feb 2018.
[2]	Receivables of remaining consideration represent the remaining cash consideration relating to the disposal of equity interest in Sumpay.cn as of December 31, 2016, which has been fully collected in March 2017.
[3]	Deferred expense represents cash paid in advance to vendors, such as consultant expense, marketing promotion expense and platform fee, which would be amortized according to their respective service periods.
[4]	Receivables for disposal of long-term investment represent the receivables from the disposal of Caiyu and Xibianyuan as of December 31, 2017. In March 2018, the amount related to the disposal of Xibianyuan has been fully collected.

PREPAYMENTS, OTHER RECEIVABLE65

PREPAYMENTS, OTHER RECEIVABLES AND DEPOSITS (Summary of Deposits) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)
Deposits for office leases and others	¥ 5,764	$ 886	¥ 5,810

PROPERTY AND EQUIPMENT, NET (Sc

PROPERTY AND EQUIPMENT, NET (Schedule of Property and Equipment) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)
Property, Plant and Equipment [Line Items]
Property and equipment, cost	¥ 163,743	$ 25,167	¥ 98,674
Less: Accumulated depreciation	(56,752)	(8,723)	(44,739)
Property and equipment, net	106,991	16,444	53,935
Electronics and office equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, cost	44,011	6,764	37,846
Motor vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, cost	12,828	1,972	11,783
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, cost	¥ 106,904	$ 16,431	¥ 49,045

PROPERTY AND EQUIPMENT, NET (Na

PROPERTY AND EQUIPMENT, NET (Narrative) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)
Property Plant And Equipment [Line Items]
Depreciation expense	¥ 13,400	$ 2,060	¥ 12,865	¥ 10,209

INTANGIBLE ASSETS, NET (Schedul

INTANGIBLE ASSETS, NET (Schedule of Intangible Assets) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2016USD ($)	Jan. 31, 2014USD ($)
Finite-Lived Intangible Assets [Line Items]
Cost	¥ 326,190	$ 50,135	¥ 67,437
Accumulated amortization	(35,104)	(5,396)	(5,890)
Intangible assets, net	291,086	44,739	61,547	$ 44,739
Finite Lived Intangible Assets Gross	326,190	50,135	67,437
Finite-Lived Intangible Assets, Accumulated Amortization	(35,104)	(5,396)	(5,890)
Computer software [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	24,649		3,576		$ 3,788
Accumulated amortization	(8,059)		(2,320)		(1,239)
Finite Lived Intangible Assets Gross	24,649		3,576		3,788
Finite-Lived Intangible Assets, Accumulated Amortization	(8,059)		(2,320)		(1,239)
License agreement [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	152,277		800		23,405
Accumulated amortization	(8,059)		(800)		(1,239)
Finite Lived Intangible Assets Gross	152,277		800		23,405
Finite-Lived Intangible Assets, Accumulated Amortization	(8,059)		(800)		(1,239)
Internet domain name [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	3,023		2,861		465
Accumulated amortization	(1,814)		(1,582)		(279)
Finite Lived Intangible Assets Gross	3,023		2,861		465
Finite-Lived Intangible Assets, Accumulated Amortization	(1,814)		(1,582)		(279)
Mobile Applications [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	60,200				9,253
Accumulated amortization	(13,228)	(2,033)	(1,188)
Finite Lived Intangible Assets Gross	60,200				$ 9,253
Finite-Lived Intangible Assets, Accumulated Amortization	(13,228)	(2,033)	(1,188)
Brand name [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	86,041	13,224	0
Accumulated amortization	(3,944)	(606)	0
Finite Lived Intangible Assets Gross	86,041	13,224	0
Finite-Lived Intangible Assets, Accumulated Amortization	¥ (3,944)	$ (606)	¥ 0

INTANGIBLE ASSETS, NET (Sched69

INTANGIBLE ASSETS, NET (Schedule of Estimated Amortization Expense) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2016USD ($)
Finite-Lived Intangible Assets [Line Items]
2,018	¥ 41,760			$ 6,418
2,019	41,281			6,345
2,020	38,981			5,991
2,021	36,749			5,648
2022 and thereafter	132,315			20,337
Intangible assets, net	¥ 291,086	$ 44,739	¥ 61,547	$ 44,739

INTANGIBLE ASSETS, NET (Narrati

INTANGIBLE ASSETS, NET (Narrative) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)
Finite-Lived Intangible Assets [Line Items]
Amortization expenses	¥ 26,102	$ 4,012	¥ 6,846	¥ 1,361

ACCRUED EXPENSES AND OTHER CU71

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Narrative) (Details) ¥ in Thousands, $ in Thousands		Feb. 09, 2018CNY (¥)	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)
Contingent consideration for business combination	[1]		¥ 54,550	$ 8,384	¥ 104,490
Qufan [Member]
Contingent consideration for business combination					¥ 54,550
Sale of Stock, Consideration Received on Transaction		¥ 127,500
Disposal Of Equity Interest, Percentage Of Ownership Transferred		51.00%
[1]	Unpaid consideration for business combination represents the unpaid cash consideration and contingent consideration relating to the acquisition of Qufan as of December 31, 2017. On February 9, 2018, the Company announced that it has disposed of its 51% equity interest in Qufan for a total consideration of RMB127,500, which will be offset by the unpaid contingent consideration of RMB54,550.

ACCRUED EXPENSES AND OTHER CU72

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) ¥ in Thousands, $ in Thousands		Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)
Advance from end users	[1]	¥ 35,888	$ 5,516	¥ 34,388
Business tax and other taxes payable		4,118	634	3,280
Deferred government grant		2,807	431	5,018
Professional fees payable		12,039	1,850	15,136
Promotional events payables		8,120	1,248	7,921
Decoration payables	[2]	5,328	819	0
Unpaid consideration for business combination	[3]	54,550	8,384	104,490
Others		29,487	4,532	13,922
Accrued expenses and other current liabilities, Total		¥ 152,337	$ 23,414	¥ 184,155
[1]	Advance from end users represents payments received by the Group in advance from the end users prior to the services provided.
[2]	Decoration payables represent the decoration expenses accrued including office furniture mainly for the new office building rented in Nanshan district, Shenzhen, which became formally functional in December 2017.
[3]	Unpaid consideration for business combination represents the unpaid cash consideration and contingent consideration relating to the acquisition of Qufan as of December 31, 2017. On February 9, 2018, the Company announced that it has disposed of its 51% equity interest in Qufan for a total consideration of RMB127,500, which will be offset by the unpaid contingent consideration of RMB54,550.

ACCUMULATED DEFICIT (Schedule o

ACCUMULATED DEFICIT (Schedule of Accumulated Deficit) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)
PRC statutory reserved funds	¥ 30,882	$ 4,746	¥ 30,224
Unreserved accumulated deficit	(888,633)	(136,580)	(568,552)
Accumulated deficit	¥ (857,751)	$ (131,834)	¥ (538,328)

ACCUMULATED DEFICIT AND STATU74

ACCUMULATED DEFICIT AND STATUTORY RESERVE (Narrative) (Details) - 12 months ended Dec. 31, 2017 ¥ in Thousands, $ in Thousands	CNY (¥)	USD ($)
Retained Earnings Adjustments [Line Items]
PRC Subsidiary and VIEs restricted amount	¥ 317,894	$ 48,859
Variable Interest Entity, Primary Beneficiary [Member]
Retained Earnings Adjustments [Line Items]
Percentage of after tax profits to be allocated to general reserve fund	10.00%
Percentage of registered capital	50.00%
E-Sun Sky Computer [Member]
Retained Earnings Adjustments [Line Items]
Percentage of after tax profits to be allocated to general reserve fund	10.00%
Percentage of registered capital	500.00%

INCOME TAXES (Narrative Summary

INCOME TAXES (Narrative Summary of Tax Rates) (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Guangyi Network [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%	25.00%
High-tech Enterprise [Member] | E-Sun Sky Network [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income		15.00%
High-tech Enterprise [Member] | Shangmeng Services [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income		15.00%
Transitional income tax rate period	3 years
Hong Kong [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	16.50%
PRC [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income			25.00%
PRC [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	15.00%
PRC [Member] | Youlanguang Technology [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%	25.00%	25.00%
PRC [Member] | E-Sun Sky Computer [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income		25.00%	12.50%	12.50%
PRC [Member] | Guangtiandi Technology [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	12.50%	12.50%	12.50%
PRC [Member] | Lhasa Yicai [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	15.00%	15.00%	15.00%	15.00%
PRC [Member] | Shenzhen Qufan [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	12.50%
PRC [Member] | Key Software Enterprise [Member] | E-Sun Sky Network [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income		15.00%		10.00%
PRC [Member] | High-tech Enterprise [Member] | E-Sun Sky Computer [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income		15.00%
MALTA
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	35.00%
Effective Income Tax Rate Reconciliation, Percent	5.00%
CURAÇAO
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	2.00%

INCOME TAXES (Schedule of Incom

INCOME TAXES (Schedule of Income (Loss) before Income Taxes) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)
Segment Reporting Information [Line Items]
Income (loss) before income taxes	¥ (328,508)	$ (50,491)	¥ (206,195)	¥ (282,240)
Cayman Islands [Member]
Segment Reporting Information [Line Items]
Income (loss) before income taxes	(163,239)	(25,089)	(179,348)	(163,416)
British Virgin Islands [Member]
Segment Reporting Information [Line Items]
Income (loss) before income taxes	(3)	0	(31)	0
USA [Member]
Segment Reporting Information [Line Items]
Income (loss) before income taxes	(4,703)	(723)	(3,809)	(2,320)
Hong Kong [Member]
Segment Reporting Information [Line Items]
Income (loss) before income taxes	(10,929)	(1,680)	(10,524)	(1,470)
PRC [Member]
Segment Reporting Information [Line Items]
Income (loss) before income taxes	(152,575)	(23,451)	(12,483)	(115,034)
JAPAN
Segment Reporting Information [Line Items]
Income (loss) before income taxes	(174)	(27)	0	0
MALTA
Segment Reporting Information [Line Items]
Income (loss) before income taxes	(4,321)	(664)	0	0
CURAÇAO
Segment Reporting Information [Line Items]
Income (loss) before income taxes	7,449	1,145	0	0
CYPRUS
Segment Reporting Information [Line Items]
Income (loss) before income taxes	(13)	(2)	0	0
AUSTRALIA
Segment Reporting Information [Line Items]
Income (loss) before income taxes	¥ 0	$ 0	¥ 0	¥ 0

INCOME TAXES (Schedule of Curre

INCOME TAXES (Schedule of Current and Deferred Components) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)
Current tax (expense) benefit	¥ 12,771	$ 1,963	¥ (3,553)	¥ (1,890)
Deferred tax (expense) benefit	(405)	(62)	496	(40,079)
Income tax (expense) benefit	¥ 12,366	$ 1,901	¥ (3,057)	¥ (41,969)

INCOME TAXES (Reconciliation of

INCOME TAXES (Reconciliation of Tax Computed Applying Statutory Income Tax Rate) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)
Income (loss) before income taxes	¥ (328,508)	$ (50,491)	¥ (206,195)	¥ (282,240)
Income tax computed at applicable tax rates (25%)	(82,127)	(12,623)	(51,549)	(70,560)
Effect of different tax rates in different jurisdictions	693	107	4,743	1,206
Non-deductible expenses	87,632	13,468	54,588	47,324
Effect of tax rate changes	0	0	(1,841)	(24,125)
Change in valuation allowance	0	0	(5,144)	88,661
Changes in interest and penalties on unrecognized tax benefits	5,098	784	3,105	3,920
Effect of EIT reversal for previous years	(19,704)	(3,028)	2,760	(2,099)
Research and development super-deduction	(1,364)	(210)	(2,947)	(2,363)
Others	(2,594)	(399)	(658)	5
Income tax expense (benefit)	¥ (12,366)	$ (1,901)	¥ 3,057	¥ 41,969

INCOME TAXES (Schedule of Unrec

INCOME TAXES (Schedule of Unrecognized Tax Benefits Reconciliation) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)
Balance at beginning of year	¥ 38,457	$ 5,911	¥ 42,983	¥ 38,901
Increase relating to current year tax positions	5,194	798	3,630	7,496
Decrease relating to prior year tax positions	(1,595)	(245)	(3,204)	(1,119)
Decrease relating to expiration of applicable statute of limitations	(17,758)	(2,729)	(4,952)	(2,295)
Balance at end of year	¥ 24,298	$ 3,735	¥ 38,457	¥ 42,983

INCOME TAXES (Components of Def

INCOME TAXES (Components of Deferred Taxes) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)
Deferred tax assets, current portion
Deferred government grants			¥ 2,417
Bad debt provision			4,962
Less: valuation allowance			(84,714)
Deferred tax assets, non-current portion
Advertising expenditure deductible in future years	¥ 61,191	$ 9,405	58,654
Deferred revenue	982	151	0
Deferred government grants	2,417	371
Loss from equity method investment	203	31	203
Bad debt provision	5,097	783
Accrued rental expense	817	126	817
Impairment loss	1,250	192	1,250
Net operating losses (“NOLs”)	34,700	5,333	16,411
Less: valuation allowance	(106,657)	(16,392)
Total deferred tax assets, non-current portion	0	0	0
Deferred tax liabilities, non-current portion
Apps and other licenses arisen from business combination	(19,475)	(2,993)	(14,902)
Total deferred tax liabilities, non-current portion	¥ (19,475)	$ (2,993)	¥ (14,902)

INCOME TAXES (Narrative) (Detai

INCOME TAXES (Narrative) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)	Dec. 31, 2017USD ($)
Income Tax Contingency [Line Items]
Recognizes interest and penalties accrued	¥ 5,098	$ 784	¥ 4,932	¥ 4,534
Unrecognized tax benefits reversed	7,667		1,827	614	$ 1,178
Accrued interest and penalties	¥ 7,420		9,989	¥ 6,884	1,140
Statute of limitation period	In general, the PRC tax authorities have up to three to five years to conduct examinations of the Group’s tax filings.	In general, the PRC tax authorities have up to three to five years to conduct examinations of the Group’s tax filings.
Net operating losses	¥ 226,617				34,830
Cumulative temporary differences of investments in foreign subsidiaries	255,333		448,176		39,244
Unrecognized deferred tax liabilities	¥ 25,533		¥ 44,818		$ 3,924
Entitlement Of Income Tax Refund, Description	the paying entity is entitled to claim 6/7 of the profit tax paid as refund	the paying entity is entitled to claim 6/7 of the profit tax paid as refund
Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Year open for examination	2,014	2,014
Net operating losses expiration year	2,018	2,018
Latest Tax Year [Member]
Income Tax Contingency [Line Items]
Year open for examination	2,017	2,017
Net operating losses expiration year	2,022	2,022

EMPLOYEE DEFINED CONTRIBUTION82

EMPLOYEE DEFINED CONTRIBUTION PLAN (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)
Defined Benefit Plan Disclosure [Line Items]
Amount of employee benefits expensed	¥ 14,160	$ 2,176	¥ 15,591	¥ 12,587

SHARE-BASED PAYMENT (Summary of

SHARE-BASED PAYMENT (Summary of Share Option Activity and Related Information) (Details) - USD ($) $ / shares in Units, $ in Thousands	Jun. 19, 2014	Apr. 08, 2011	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Number of option
Exercised			(894,760)	(2,276,320)	(5,274,480)	(22,742,660)
Restricted shares granted to employees and directors [Member]
Number of option
Outstanding, January 1, 2017			0
Granted			12,580,280
Forfeited			0
Exercised			0
Outstanding, December 31, 2017			12,580,280	0
Vested and expected to vest at December 31, 2017			12,580,280
Exercisable at December 31, 2017			0
Weighted average grant date fair value per share
Granted			$ 0.96
Outstanding, December 31, 2017			0.96
Vested and expected to vest at December 31, 2017			$ 0.96
Weighted average remaining contractual year
Outstanding			9 years 7 months 17 days
Granted			9 years 7 months 17 days
Vested and expected to vest at December 31, 2017			9 years 7 months 17 days
Aggregated intrinsic value
Outstanding			$ 12,719	$ 12,719
Vested and expected to vest at December 31, 2017			$ 12,719
Employees and Directors [Member]
Number of option
Outstanding, January 1, 2017			55,382,320
Granted		13,864,000	0	0	0
Forfeited			(12,500,000)
Exercised			(894,760)
Outstanding, December 31, 2017			41,987,560	55,382,320
Vested and expected to vest at December 31, 2017			41,762,129
Exercisable at December 31, 2017			37,006,200
Weighted average exercise price
Outstanding, January 1, 2017			$ 1.7
Granted	$ 3.232	$ 0.40	0
Forfeited			1.79
Exercised			1.22
Outstanding, December 31, 2017			1.04	$ 1.7
Vested and expected to vest at December 31, 2017			1.05
Exercisable at December 31, 2017			0.95
Weighted average grant date fair value per share
Outstanding, January 1, 2017			1.12
Granted			0	0.89
Forfeited			0.9
Exercised			1.28
Outstanding, December 31, 2017			1.18	$ 1.12
Vested and expected to vest at December 31, 2017			1.19
Exercisable at December 31, 2017			$ 1.22
Weighted average remaining contractual year
Outstanding			1 year 7 months 2 days	2 years 7 months 24 days
Vested and expected to vest at December 31, 2017			1 year 6 months 4 days
Exercisable at December 31, 2017			1 year 6 months 11 days
Aggregated intrinsic value
Outstanding			$ 3,986
Vested and expected to vest at December 31, 2017			3,803
Exercisable at December 31, 2017			$ 3,986

SHARE-BASED PAYMENT (Schedule o

SHARE-BASED PAYMENT (Schedule of Assumptions Used to Estimate Fair Value of Share Options Granted) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	54.83%
Expected volatility, minimum		70.80%	51.96%
Expected volatility, maximum		77.52%	56.23%
Risk-free interest rate	1.20%
Risk-free interest rate, minimum		1.13%	1.06%
Risk-free interest rate, maximum		1.62%	1.64%
Dividend yield	0.00%	0.00%	0.00%
Forfeiture rate	0.00%	0.00%	0.00%
Suboptimal early exercise factor	$ 2.2		$ 2.8
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Suboptimal early exercise factor		$ 2.2
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Suboptimal early exercise factor		$ 2.8

SHARE-BASED PAYMENT (Schedule85

SHARE-BASED PAYMENT (Schedule of Share-Based Compensation Expenses Relating to Options Granted) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2016USD ($)	Dec. 31, 2015CNY (¥)	Dec. 31, 2015USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	¥ 91,143	$ 14,008	¥ 163,341	$ 23,526	¥ 158,629	$ 24,488
Cost of Services [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	1,343	206	2,993	431	3,052	471
Sales and marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	9,228	1,418	13,966	2,012	13,771	2,126
General and administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	64,202	9,868	121,358	17,479	119,002	18,371
Service development expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	16,370	$ 2,516	25,024	$ 3,604	22,804	$ 3,520
Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	88,054		156,227		149,567
Employees [Member] | Cost of Services [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	1,343		2,993		3,052
Employees [Member] | Sales and marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	9,228		13,966		13,771
Employees [Member] | General and administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	61,113		114,244		109,940
Employees [Member] | Service development expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	16,370		25,024		22,804
Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	3,089		7,114		9,062
Directors [Member] | Cost of Services [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses
Directors [Member] | Sales and marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses
Directors [Member] | General and administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	3,089		7,114		9,062
Directors [Member] | Service development expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses

SHARE-BASED PAYMENT (Narrative)

SHARE-BASED PAYMENT (Narrative) (Details) $ / shares in Units, ¥ in Thousands, $ in Thousands

Dec. 01, 2019shares

Dec. 31, 2018shares

Mar. 01, 2018shares

Aug. 15, 2017shares

Jan. 06, 2016$ / sharesshares

Jan. 05, 2016$ / sharesshares

Jun. 29, 2015$ / sharesshares

Mar. 19, 2015USD ($)$ / shares

Jun. 19, 2014$ / sharesshares

Oct. 22, 2013$ / sharesshares

Jun. 08, 2012USD ($)Employees$ / sharesshares

Apr. 08, 2011$ / sharesshares

Mar. 28, 2011

Nov. 22, 2017shares

Jul. 19, 2017USD ($)shares

Dec. 16, 2016$ / sharesshares

Jan. 16, 2016$ / sharesshares

Dec. 31, 2017CNY (¥)shares

Dec. 31, 2017USD ($)$ / sharesshares

Dec. 31, 2016CNY (¥)shares

Dec. 31, 2016$ / sharesshares

Dec. 31, 2015CNY (¥)shares

Dec. 31, 2014CNY (¥)

Dec. 31, 2017USD ($)shares

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Maximum percentage of issued and outstanding ordinary shares authorized for issuance under plan

12.00%

Number of vested and non vested options

13,740,000

Number of employees granted | Employees

88

Exercise price of options previously granted | $ / shares

$ 0.4

Exercise price of options granted | $ / shares

$ 0.2

Incremental compensation cost | $

$ 670

Incremental compensation cost recognized during year | $

178

Incremental compensation cost of unvested options | $

$ 39,616

2,036

Share Based Compensation Arrangement By Share Based Payment Award Plan Modification Incremental Compensation Cost | $

670

After modification [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Fair value of options | $

15,390

3,460

Before modification [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Fair value of options | $

$ 4,193

2,790

Employees and Directors [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Shares granted during period

13,864,000

0

0

0

0

Exercise price of share | $ / shares

$ 3.232

$ 0.40

$ 0

Number of shares options vested

41,762,129

41,762,129

Intrinsic value of options exercised

¥ 479

$ 74

¥ 11,051

¥ 49,625

Number of vested and non vested options

41,987,560

55,382,320

55,382,320

41,987,560

Fair value of options

¥ 157,956

$ 24,277

¥ 127,333

¥ 63,200

Weighted-average grant-date fair value per share granted | $ / shares

$ 0

$ 0.89

Employees and Directors [Member] | First anniversary [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

5,506,600

Employees and Directors [Member] | Second anniversary [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

5,225,800

Employees and Directors [Member] | Third anniversary [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

1,565,800

Employees and Directors [Member] | Fourth anniversary [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

1,565,800

Directors [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Shares granted during period

600,000

200,000

2,000,000

5,003,980

600,000

Exercise price of share | $ / shares

$ 1.851

$ 2.55

$ 0.40

$ 1.35

Directors [Member] | First anniversary [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

66,670

Directors [Member] | Second anniversary [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

66,670

Directors [Member] | Third anniversary [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

66,660

Directors [Member] | November 22, 2014 [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

666,690

Directors [Member] | November 22, 2015 [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

666,690

Directors [Member] | November 22, 2016 [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

666,620

Consultants [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Shares granted during period

12,600,000

Employees [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Shares granted during period

2,500,000

32,561,800

2,660,000

15,900,000

Exercise price of share | $ / shares

$ 2

$ 0.40

$ 1.743

Exercise price of options previously granted | $ / shares

$ 3.232

Exercise price of options granted | $ / shares

$ 1

Incremental compensation cost | $

$ 11,197

Incremental compensation cost recognized during year | $

213

Share Based Compensation Arrangement By Share Based Payment Award Plan Modification Incremental Compensation Cost | $

11,197

Employees [Member] | First anniversary [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

5,437,820

1,620,000

Employees [Member] | Second anniversary [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

10,843,080

220,000

Employees [Member] | Third anniversary [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

220,000

Employees [Member] | 180 days [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

600,000

Employees [Member] | Share-based Compensation Award, Tranche One [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

750,000

2,650,000

Employees [Member] | Share-based Compensation Award, Tranche Two [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

750,000

5,300,000

Employees [Member] | Share-based Compensation Award, Tranche Three [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares options vested

1,000,000

7,950,000

Compensation cost measured [Member] | After modification [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Fair value of options | $

28,632

1,544

Total compensation cost | $

$ 39,829

$ 2,214

ADS [Member] | Employees and Directors [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Exercise price of share | $ / shares

$ 32.32

ADS [Member] | Employees [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Exercise price of options previously granted | $ / shares

$ 32.32

Exercise price of options granted | $ / shares

$ 10

Restricted Stock Units (RSUs) [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Shares granted during period

12,580,280

12,580,280

Number of shares options vested

12,580,280

12,580,280

Number of vested and non vested options

12,580,280

0

0

12,580,280

Equity awards granted to employees recognition period

9 years 7 months 6 days

9 years 7 months 6 days

Weighted-average grant-date fair value per share granted | $ / shares

$ 0.96

Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options

¥ 78,902

$ 12,127

Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition 1

9 years 7 months 6 days

9 years 7 months 6 days

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares

$ 0.96

Restricted Stock Units (RSUs) [Member] | Directors [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period

350,000

Restricted Stock Units (RSUs) [Member] | Employees [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period

12,230,280

Restricted Stock Units (RSUs) [Member] | Employees [Member] | Share-based Compensation Award, Tranche One [Member] | Subsequent Event [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period

4,035,994

Restricted Stock Units (RSUs) [Member] | Employees [Member] | Share-based Compensation Award, Tranche Two [Member] | Scenario, Forecast [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period

4,035,994

Restricted Stock Units (RSUs) [Member] | Employees [Member] | Share-based Compensation Award, Tranche Three [Member] | Scenario, Forecast [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period

4,158,292

Employee Stock Option [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Incremental compensation cost | $

$ 55

Equity awards granted to employees recognition period

1 year 1 month 6 days

1 year 1 month 6 days

Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Description and Terms

On July 19, 2017 (the Third Modification Date), the Company extended the maturity date of the remaining unexercised share options granted on July 19, 2014 from July 19, 2017 to July 19, 2018. The modification was intended to provide additional incentives for these employees.

On July 19, 2017 (the Third Modification Date), the Company extended the maturity date of the remaining unexercised share options granted on July 19, 2014 from July 19, 2017 to July 19, 2018. The modification was intended to provide additional incentives for these employees.

Share-based Compensation Arrangement by Share-based Payment Award, Method of Measuring Cost of Award

The incremental compensation cost of US$55 for unexercised options is being amortized on an accelerated basis over the extending term of the original award from July 19, 2017 to July 19, 2018.

The incremental compensation cost of US$55 for unexercised options is being amortized on an accelerated basis over the extending term of the original award from July 19, 2017 to July 19, 2018.

Share Based Compensation Arrangement By Share Based Payment Award Plan Modification Incremental Compensation Cost | $

$ 55

Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number

2,828,620

Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options

¥ 7,079

$ 1,088

Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition 1

1 year 1 month 6 days

1 year 1 month 6 days

COMMITMENTS AND CONTINGENCIES87

COMMITMENTS AND CONTINGENCIES (Schedule of Operating Lease Commitments) (Details) - Dec. 31, 2017 ¥ in Thousands, $ in Thousands	CNY (¥)	USD ($)
2,018	¥ 30,217	$ 4,644
2,019	28,154	4,327
2,020	24,630	3,786
Operating lease commitments due	¥ 83,001	$ 12,757

COMMITMENTS AND CONTINGENCIES88

COMMITMENTS AND CONTINGENCIES (Narrative) (Details) ¥ in Thousands, $ in Thousands	Sep. 12, 2016USD ($)	Feb. 25, 2015USD ($)	Nov. 22, 2013USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)	Dec. 31, 2017USD ($)
Total rental expenses for operating leases				¥ 29,170	$ 4,483	¥ 11,421	¥ 4,013
Accrual for unrecognized tax benefits				¥ 24,298		¥ 38,457		$ 3,735
Payments for Legal Settlements		$ 1,500	$ 2,500
Proceeds from Insurance Settlement, Investing Activities	$ 1,000

LOSSES PER SHARE (Details)

LOSSES PER SHARE (Details) ¥ / shares in Units, $ / shares in Units, ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)¥ / sharesshares	Dec. 31, 2017USD ($)$ / sharesshares	Dec. 31, 2016CNY (¥)¥ / sharesshares	Dec. 31, 2015CNY (¥)¥ / sharesshares
Basic Denominator:
Denominator used for losses per share	408,310,122	408,310,122	414,872,756	385,590,213
Losses per share—basic | (per share)	¥ (0.78)	$ (0.12)	¥ (0.49)	¥ (0.84)
Diluted Numerator:
Net loss attributable to ordinary shareholders	¥ (317,099)	$ (48,737)	¥ (202,965)	¥ (323,897)
Diluted Denominator:
Weighted average number of ordinary shares outstanding used in calculating basic losses per share	408,310,122	408,310,122	414,872,756	385,590,213
Denominator used for losses per share	408,310,122	408,310,122	414,872,756	385,590,213
Losses per share—diluted | (per share)	¥ (0.78)	$ (0.12)	¥ (0.49)	¥ (0.84)
Losses per ADS:
Losses per ADS - basic | (per share)	(7.77)	(1.2)	(4.89)	(8.4)
Losses per ADS - diluted | (per share)	¥ (7.77)	$ (1.2)	¥ (4.89)	¥ (8.4)
Class B Ordinary shares [Member]
Basic Numerator:
Allocation of net loss attributable to 500.com Limited’s ordinary shareholders used in calculating income per ordinary share—basic	¥ (57,780)	$ (8,880)	¥ (36,908)	¥ (76,233)
Basic Denominator:
Denominator used for losses per share	74,400,299	74,400,299	75,442,810	90,753,548
Losses per share—basic | (per share)	¥ (0.78)	$ (0.12)	¥ (0.49)	¥ (0.84)
Diluted Numerator:
Allocation of net loss attributable to 500.com Limited’s ordinary shareholders used in calculating loss per ordinary share— diluted	¥ (57,780)	$ (8,880)	¥ (36,908)	¥ (76,233)
Reallocation of net loss attributable to 500.com Limited’s ordinary shareholders as a result of conversion of Class B to Class A shares
Net loss attributable to ordinary shareholders	¥ (57,780)	$ (8,880)	¥ (36,908)	¥ (76,233)
Diluted Denominator:
Weighted average number of ordinary shares outstanding used in calculating basic losses per share	74,400,299	74,400,299	75,442,810	90,753,548
Conversion of Class B to Class A ordinary shares
Share options
Denominator used for losses per share	74,400,299	74,400,299	75,442,810	90,753,548
Losses per share—diluted | (per share)	¥ (0.78)	$ (0.12)	¥ (0.49)	¥ (0.84)
Losses per ADS:
Denominator used for losses per ADS - basic
Denominator used for losses per ADS - diluted
Losses per ADS - basic | (per share)
Losses per ADS - diluted | (per share)
Class A Ordinary shares [Member]
Basic Numerator:
Allocation of net loss attributable to 500.com Limited’s ordinary shareholders used in calculating income per ordinary share—basic	¥ (259,319)	$ (39,857)	¥ (166,057)	¥ (247,664)
Basic Denominator:
Denominator used for losses per share	333,909,823	333,909,823	339,429,946	294,836,665
Losses per share—basic | (per share)	¥ (0.78)	$ (0.12)	¥ (0.49)	¥ (0.84)
Diluted Numerator:
Allocation of net loss attributable to 500.com Limited’s ordinary shareholders used in calculating loss per ordinary share— diluted	¥ (259,319)	$ (39,857)	¥ (166,057)	¥ (247,664)
Reallocation of net loss attributable to 500.com Limited’s ordinary shareholders as a result of conversion of Class B to Class A shares	(57,780)	(8,880)	(36,908)	(76,233)
Net loss attributable to ordinary shareholders	¥ (317,099)	$ (48,737)	¥ (202,965)	¥ (323,897)
Diluted Denominator:
Weighted average number of ordinary shares outstanding used in calculating basic losses per share	333,909,823	333,909,823	339,429,946	294,836,665
Conversion of Class B to Class A ordinary shares	74,400,299	74,400,299	75,442,810	90,753,548
Share options				0
Denominator used for losses per share	408,310,122	408,310,122	414,872,756	385,590,213
Losses per share—diluted | (per share)	¥ (0.78)	$ (0.12)	¥ (0.49)	¥ (0.84)
Losses per ADS:
Denominator used for losses per ADS - basic	33,390,982	33,390,982	33,942,995	29,483,667
Denominator used for losses per ADS - diluted	40,831,012	40,831,012	41,487,276	38,599,021
Losses per ADS - basic | (per share)	¥ (7.77)	$ (7.77)	¥ (4.89)	¥ (8.4)
Losses per ADS - diluted | (per share)	¥ (7.77)	$ (7.77)	¥ (4.89)	¥ (8.4)

EQUITY TRANSACTIONS (Details)

EQUITY TRANSACTIONS (Details) $ / shares in Units, ¥ in Thousands, $ in Thousands	1 Months Ended	12 Months Ended
	Nov. 30, 2013shares	Dec. 31, 2017CNY (¥)shares	Dec. 31, 2017USD ($)$ / sharesshares	Dec. 31, 2016CNY (¥)shares	Dec. 31, 2016USD ($)$ / sharesshares	Dec. 31, 2015CNY (¥)shares	Dec. 31, 2015USD ($)$ / sharesshares	Dec. 31, 2014USD ($)$ / sharesshares	Dec. 31, 2013USD ($)shares
Class of Stock [Line Items]
Issuance of ordinary shares from exercise of share options, shares		894,760	894,760	2,276,320	2,276,320	5,274,480	5,274,480	22,742,660
Aggregate consideration from shares issued from exercise of stock options		¥ 5,583	$ 858	¥ 12,558		¥ 18,126
Authorized share capital, ordinary shares			1,000,000,000
Minimum [Member]
Class of Stock [Line Items]
Options exercise price per share | $ / shares			$ 0.2		$ 0.2		$ 0.2	$ 0.2
Maximum [Member]
Class of Stock [Line Items]
Options exercise price per share | $ / shares			1		1		$ 1	$ 0.4
Class B Ordinary shares [Member]
Class of Stock [Line Items]
Ordinary shares, par value per share | $ / shares			$ 0.00005		$ 0.00005
Authorized share capital, ordinary shares			300,000,000		300,000,000
Ordinary shares issued			74,400,299		74,400,299		84,999,159	96,634,529	262,197,451
Class B Ordinary shares [Member] | Ordinary shares [Member]
Class of Stock [Line Items]
Issuance of ordinary shares from exercise of share options, shares		0	0	0	0	0	0
Conversion of ordinary shares, shares converted	231,428,220
Conversion of convertible note, ordinary shares issued									19,230,769
Private placement, ordinary shares issued						0	0		11,538,462
Ordinary shares issued, aggregate consideration | $									$ 15,000
Class A Ordinary shares [Member]
Class of Stock [Line Items]
Number of common shares issued during period		894,760	894,760	2,276,320	2,276,320	5,274,480	5,274,480
Ordinary shares, par value per share | $ / shares			$ 0.00005		$ 0.00005		$ 0.00005	$ 0.00005
Aggregate consideration from shares issued from exercise of stock options | $			$ 831		$ 2,032		$ 2,960	$ 8,107
Number of additional shares issued						63,500,500	63,500,500
Repurchased of ordinary shares, consideration | $			$ 2,999		$ 17,240		$ 1,434
Repurchased of ordinary shares		2,602,000	2,602,000	11,415,320	11,415,320	1,220,000	1,220,000
Authorized share capital, ordinary shares			700,000,000		700,000,000
Ordinary shares issued, aggregate consideration | $							$ 123,391
Ordinary shares issued			333,787,552		335,494,792		334,034,932	254,844,582	66,539,000
Class A Ordinary shares [Member] | Ordinary shares [Member]
Class of Stock [Line Items]
Issuance of ordinary shares from exercise of share options, shares		894,760	894,760	2,276,320	2,276,320	5,274,480	5,274,480	22,742,660
Conversion of ordinary shares, shares converted	66,539,000
Private placement, ordinary shares issued						63,500,500	63,500,500

FAIR VALUE MEASUREMENT (Assets

FAIR VALUE MEASUREMENT (Assets and Liabilities Measured or Disclosed At Fair Value) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2017USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Time deposits			¥ 804,692
Total fair value	478,908		1,339,857	73,607
Short-term investments	120,000		104,266	18,444
Fair Value, Measured on Non Recurring Basis, Gain Loss Included in Earnings	29,514	$ 4,537
Liabilities measured at fair value	54,550		52,240	8,384
Total Losses [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments			(3,583)
Liabilities measured at fair value	2,384			366
Available-for-sale Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	733			113
Contingent consideration payable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value	2,384			366
Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value			52,240
Recurring [Member] | Available-for-sale Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments			4,266
Recurring [Member] | Contingent consideration payable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value	54,550			8,384
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term investments
Fair Value, Measurements, Nonrecurring [Member] | Equity Method Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term investments	28,781	$ 4,424	(3,583)
Structured Deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments
Structured Deposit [Member] | Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	120,000		100,000	18,444
Fixed-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	289,304		312,165	44,465
Adjustable-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	189,604		223,000	$ 29,142
Quoted prices in active markets for identical assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Time deposits
Total fair value
Short-term investments	0		4,266
Liabilities measured at fair value
Quoted prices in active markets for identical assets (Level 1) [Member] | Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value
Quoted prices in active markets for identical assets (Level 1) [Member] | Recurring [Member] | Available-for-sale Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments			4,266
Quoted prices in active markets for identical assets (Level 1) [Member] | Recurring [Member] | Contingent consideration payable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value
Quoted prices in active markets for identical assets (Level 1) [Member] | Fair Value, Measurements, Nonrecurring [Member] | Equity Method Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term investments
Quoted prices in active markets for identical assets (Level 1) [Member] | Structured Deposit [Member] | Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments
Quoted prices in active markets for identical assets (Level 1) [Member] | Fixed-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents
Quoted prices in active markets for identical assets (Level 1) [Member] | Adjustable-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents
Significant other observable inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Time deposits			804,692
Total fair value	478,908		1,339,857
Short-term investments	120,000		100,000
Liabilities measured at fair value
Significant other observable inputs (Level 2) [Member] | Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value
Significant other observable inputs (Level 2) [Member] | Recurring [Member] | Available-for-sale Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments
Significant other observable inputs (Level 2) [Member] | Recurring [Member] | Contingent consideration payable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value
Significant other observable inputs (Level 2) [Member] | Fair Value, Measurements, Nonrecurring [Member] | Equity Method Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term investments
Significant other observable inputs (Level 2) [Member] | Structured Deposit [Member] | Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	120,000		100,000
Significant other observable inputs (Level 2) [Member] | Fixed-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	289,304		312,165
Significant other observable inputs (Level 2) [Member] | Adjustable-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	189,604		223,000
Significant unobservable inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Time deposits
Total fair value
Short-term investments			0
Liabilities measured at fair value	54,550		52,240
Significant unobservable inputs (Level 3) [Member] | Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value			52,240
Significant unobservable inputs (Level 3) [Member] | Recurring [Member] | Available-for-sale Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments
Significant unobservable inputs (Level 3) [Member] | Recurring [Member] | Contingent consideration payable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value	54,550
Significant unobservable inputs (Level 3) [Member] | Fair Value, Measurements, Nonrecurring [Member] | Equity Method Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term investments
Significant unobservable inputs (Level 3) [Member] | Structured Deposit [Member] | Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments
Significant unobservable inputs (Level 3) [Member] | Fixed-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents
Significant unobservable inputs (Level 3) [Member] | Adjustable-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents

FAIR VALUE MEASUREMENT (Signifi

FAIR VALUE MEASUREMENT (Significant Unobservable Inputs Used In Fair Value Measurement) (Details) ¥ / shares in Units, ¥ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)¥ / shares
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Spot value of net income | ¥	¥ 31,698
Volatility of net income	10.00%
Expected annual growth rate of net income	0.00%
Discount Factor | ¥ / shares	¥ 0.95

FAIR VALUE MEASUREMENT (Net Der

FAIR VALUE MEASUREMENT (Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	¥ 52,240		¥ 0
Recognized during the year	2,310		52,240
Ending Balance	¥ 54,550	$ 8,384	¥ 52,240

SEGMENT REPORTING (Details)

SEGMENT REPORTING (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)	Dec. 31, 2017USD ($)
Segment Reporting Information [Line Items]
Net Revenues	¥ 131,323	$ 20,184	¥ 10,928	¥ 99,552
Depreciation and Amortization	39,502	6,071	18,995
Operating (loss)	(350,868)	(53,928)	(366,562)	(301,408)
Interest income	20,574	3,162	23,859	20,589
Interest expense	0	0	0	2,138
Income tax expense	(12,366)	(1,901)	3,057	41,969
Segment net (loss)	(316,142)	$ (48,590)	(209,252)	¥ (324,209)
Segment assets	1,754,559		2,076,892		$ 269,669
Europe
Segment Reporting Information [Line Items]
Net Revenues	49,370		0
Depreciation and Amortization	2,344		0
Operating (loss)	2,755		0
Interest income	0		0
Interest expense	0		0
Income tax expense	156		0
Segment net (loss)	2,959		0
Segment assets	58,535		0
CHINA
Segment Reporting Information [Line Items]
Net Revenues	81,953		10,928
Depreciation and Amortization	37,158		19,711
Operating (loss)	(353,623)		(366,562)
Interest income	20,574		23,859
Interest expense	0		0
Income tax expense	(12,522)		3,057
Segment net (loss)	(319,101)		(209,252)
Segment assets	¥ 1,696,024		¥ 2,076,892

SUBSEQUENT EVENTS (Details)

SUBSEQUENT EVENTS (Details) - Qufan Cayman and Shenzhen Qufan [Member] ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)
Subsequent Event [Line Items]
Pro forma total revenues	¥ 59,465	$ 9,140	¥ 5,669
Pro forma net income	15,328	2,356	706
Pro forma net income attributable to 500.com Limited	¥ 7,817	$ 1,201	¥ 360

SUBSEQUENT EVENTS (Narrative) (

SUBSEQUENT EVENTS (Narrative) (Details) ¥ in Thousands, $ in Thousands	Feb. 09, 2018CNY (¥)	Feb. 28, 2018CNY (¥)	Feb. 28, 2018USD ($)
Qufan [Member]
Subsequent Event [Line Items]
Disposal Of Equity Interest, Percentage Of Ownership Transferred	51.00%
Sale of Stock, Consideration Received on Transaction	¥ 127,500
Subsequent Event [Member] | Qufan Cayman and Shenzhen Qufan [Member]
Subsequent Event [Line Items]
Gain on Sale of Investments		¥ 7,877	$ 1,211
Subsequent Event [Member] | Qufan [Member]
Subsequent Event [Line Items]
Disposal Of Equity Interest, Percentage Of Ownership Transferred	51.00%
Sale of Stock, Consideration Received on Transaction	¥ 127,500
Subsequent Event [Member] | Shenzhen Wubai Zhifu Co.,Ltd [Member]
Subsequent Event [Line Items]
Disposal Of Equity Interest, Percentage Of Ownership Transferred		100.00%	100.00%
Loss on Sale of Investments		¥ 6,933	$ 1,066

CONDENSED FINANCIAL INFORMATI97

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY (Narrative) (Details) - Dec. 31, 2017 ¥ in Thousands, $ in Thousands	CNY (¥)	USD ($)
PRC Subsidiary and VIEs restricted amount	¥ 317,894	$ 48,859

CONDENSED FINANCIAL INFORMATI98

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY (Schedule of Condensed Balance Sheets) (Details) ¥ in Thousands, $ in Thousands		Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2016USD ($)	Dec. 31, 2015CNY (¥)	Dec. 31, 2014CNY (¥)
Current assets:
Cash and cash equivalents		¥ 529,124	$ 81,325	¥ 673,102	$ 103,454	¥ 400,657	¥ 485,556
Time deposits		0	0	804,692
Other current assets		12,611	1,938	0
Amounts due from intergroup companies	[1]	9,322	1,432	0
Total current assets		737,022	113,276	1,707,032
Non-current assets:
Property and equipment, net		106,991	16,444	53,935
Total non-current assets		1,017,537	156,393	369,860
TOTAL ASSETS		1,754,559	269,669	2,076,892
Current liabilities:
Accrued payroll and welfare payable		16,683	2,564	16,270
Accrued expenses and other liabilities		152,337	23,414	184,155
Total current liabilities		175,937	27,041	209,475
TOTAL LIABILITIES		223,197	34,304	268,849
Shareholders’ equity:
Additional paid-in capital		2,295,111	352,753	2,198,385
Treasury shares		(143,780)	(22,099)	(123,258)
Accumulated other comprehensive income		116,051	17,837	172,589
Total 500.com Limited shareholders’ equity		1,409,774	216,678	1,709,531
TOTAL LIABILITIES, NONCONTROLLING INTERESTS AND SHAREHOLDERS’ EQUITY		1,754,559	269,669	2,076,892
Class A Ordinary shares [Member]
Shareholders’ equity:
Ordinary shares, value		115	17	115
Class B Ordinary shares [Member]
Shareholders’ equity:
Ordinary shares, value		28	4	28
Parent Company [Member]
Current assets:
Cash and cash equivalents		1,304	200	341,671	$ 52,514	¥ 20,594	¥ 93,748
Time deposits		0	0	700,637
Other current assets		20,257	3,113	23,728
Amounts due from intergroup companies		400,659	61,580	194,117
Total current assets		422,220	64,893	1,260,153
Non-current assets:
Investment in subsidiaries and VIEs		1,060,273	162,961	566,267
Property and equipment, net		241	37	343
Total non-current assets		1,060,514	162,998	566,610
TOTAL ASSETS		1,482,734	227,891	1,826,763
Current liabilities:
Accrued payroll and welfare payable		544	84	43
Accrued expenses and other liabilities		68,015	10,453	112,548
Amounts due to intergroup companies		4,401	676	4,641
Total current liabilities		72,960	11,213	117,232
TOTAL LIABILITIES		72,960	11,213	117,232
Shareholders’ equity:
Additional paid-in capital		2,295,111	352,753	2,198,385
Treasury shares		(143,780)	(22,099)	(123,258)
Accumulated other comprehensive income		116,051	17,837	172,589
Accumulated deficit and statutory reserve		(857,751)	(131,834)	(538,328)
Total 500.com Limited shareholders’ equity		1,409,774	216,678	1,709,531
TOTAL LIABILITIES, NONCONTROLLING INTERESTS AND SHAREHOLDERS’ EQUITY		1,482,734	227,891	1,826,763
Parent Company [Member] | Class A Ordinary shares [Member]
Shareholders’ equity:
Ordinary shares, value		115	17	115
Parent Company [Member] | Class B Ordinary shares [Member]
Shareholders’ equity:
Ordinary shares, value		¥ 28	$ 4	¥ 28
[1]	Receivables for disposal of long-term investment represent the receivables from the disposal of Caiyu and Xibianyuan as of December 31, 2017. In March 2018, the amount related to the disposal of Xibianyuan has been fully collected.

CONDENSED FINANCIAL INFORMATI99

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY (Schedule of Condensed statements of comprehensive income (loss)) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)
Operating expenses:
Sales and marketing	¥ (76,977)	$ (11,831)	¥ (44,921)	¥ (87,022)
General and administrative	(257,079)	(39,512)	(247,688)	(232,244)
Indemnity cost	0	0	(9,979)	0
Other operating income	1,204	185	2,732	6,910
Operating loss	(350,868)	(53,928)	(366,562)	(301,408)
Interest income	20,574	3,162	23,859	20,589
Loss before income tax	(328,508)	(50,491)	(206,195)	(282,240)
Income tax benefit	12,366	1,901	(3,057)	(41,969)
Net loss attributable to 500.com Limited	(317,099)	(48,737)	(202,965)	(323,897)
Change in fair value of AFS	(733)	(113)	754	0
Comprehensive loss attributable to 500.com Limited	(374,028)	(57,487)	(119,864)	(257,046)
Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Net Revenues	0	0	0	0
Operating expenses:
Sales and marketing	(497)	(76)	(402)	(330)
General and administrative	(68,260)	(10,491)	(15,934)	(13,160)
Total operating expenses	(68,757)	(10,567)	(16,336)	(13,490)
Indemnity cost	0	0	(9,979)	0
Other operating income	0	0	39	0
Operating loss	(68,757)	(10,567)	(26,276)	(13,490)
Interest income	4,818	741	10,269	8,703
Equity in (loss) profits of subsidiaries and VIEs	(253,160)	(38,911)	(186,958)	(319,110)
Loss before income tax	(317,099)	(48,737)	(202,965)	(323,897)
Income tax benefit	0	0	0	0
Net loss attributable to 500.com Limited	(317,099)	(48,737)	(202,965)	(323,897)
Foreign currency translation gain (loss)	(56,196)	(8,637)	82,347	66,851
Change in fair value of AFS	(733)	(113)	0	0
Comprehensive loss attributable to 500.com Limited	¥ (374,028)	$ (57,487)	¥ (120,618)	¥ (257,046)

CONDENSED FINANCIAL INFORMAT100

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY (Schedule of Condensed Statements of Cash Flows) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)
Condensed Cash Flow Statements, Captions [Line Items]
Effect of exchange rate changes on cash and cash equivalents	¥ (40,900)	$ (6,286)	¥ 47	¥ 46,328
Net (decrease) increase in cash and cash equivalents	(143,978)	(22,129)	272,445	(84,899)
Cash and cash equivalents at beginning of the year	673,102	103,454	400,657	485,556
Cash and cash equivalents at end of the year	529,124	81,325	673,102	400,657
Parent Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	(270,965)	(41,647)	25,679	(2,266)
Net cash (used in) provided by investing activities	3,065	471	413,401	(865,971)
Net cash provided by (used in) financing activities	(11,945)	(1,836)	(118,484)	748,755
Effect of exchange rate changes on cash and cash equivalents	(60,522)	(9,302)	481	46,328
Net (decrease) increase in cash and cash equivalents	(340,367)	(52,314)	321,077	(73,154)
Cash and cash equivalents at beginning of the year	341,671	52,514	20,594	93,748
Cash and cash equivalents at end of the year	¥ 1,304	$ 200	¥ 341,671	¥ 20,594

CONDENSED FINANCIAL INFORMAT101

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY (Schedule of Condensed Balance Sheets) (Parenthetical) (Details) - $ / shares	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Ordinary shares, shares authorized	1,000,000,000
Class A Ordinary shares [Member]
Condensed Financial Statements, Captions [Line Items]
Ordinary shares, par value	$ 0.00005	$ 0.00005	$ 0.00005	$ 0.00005
Ordinary shares, shares authorized	700,000,000	700,000,000
Ordinary shares, shares issued	333,787,552	335,494,792	334,034,932	254,844,582	66,539,000
Ordinary shares, shares outstanding	333,787,552	335,494,792
Class B Ordinary shares [Member]
Condensed Financial Statements, Captions [Line Items]
Ordinary shares, par value	$ 0.00005	$ 0.00005
Ordinary shares, shares authorized	300,000,000	300,000,000
Ordinary shares, shares issued	74,400,299	74,400,299	84,999,159	96,634,529	262,197,451
Ordinary shares, shares outstanding	74,400,299	74,400,299
Parent Company [Member] | Class A Ordinary shares [Member]
Condensed Financial Statements, Captions [Line Items]
Ordinary shares, par value	$ 0.00005	$ 0.00005
Ordinary shares, shares authorized	700,000,000	700,000,000
Ordinary shares, shares issued	333,787,552	335,494,792
Ordinary shares, shares outstanding	333,787,552	335,494,792
Parent Company [Member] | Class B Ordinary shares [Member]
Condensed Financial Statements, Captions [Line Items]
Ordinary shares, par value	$ 0.00005	$ 0.00005
Ordinary shares, shares authorized	300,000,000	300,000,000
Ordinary shares, shares issued	74,400,299	74,400,299
Ordinary shares, shares outstanding	74,400,299	74,400,299