| Cover | 12 Months Ended |
| Dec. 31, 2022 shares | |
| Entity Addresses [Line Items] | |
| Document Type | 20-F/A |
| Amendment Flag | false |
| Document Registration Statement | false |
| Document Annual Report | true |
| Document Transition Report | false |
| Document Shell Company Report | false |
| Document Period End Date | Dec. 31, 2022 |
| Document Fiscal Period Focus | FY |
| Document Fiscal Year Focus | 2022 |
| Current Fiscal Year End Date | --12-31 |
| Entity File Number | 001-34873 |
| Entity Registrant Name | ChinaCache International Holdings Ltd. |
| Entity Central Index Key | 0001498576 |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | No 8 Zhuyuan 3rd Street |
| Entity Address, Address Line Two | Area 3 |
| Entity Address, Address Line Three | Tianzhu Comprehensive Bonded Zone |
| Entity Address, City or Town | Beijing |
| Entity Address, Country | CN |
| Entity Well-known Seasoned Issuer | No |
| Entity Voluntary Filers | No |
| Entity Current Reporting Status | Yes |
| Entity Interactive Data Current | Yes |
| Entity Filer Category | Non-accelerated Filer |
| Entity Emerging Growth Company | false |
| Document Accounting Standard | U.S. GAAP |
| Entity Shell Company | false |
| Entity Common Stock, Shares Outstanding | 436,816,529 |
| Auditor Name | Shanghai Perfect C.P.A. Partnership |
| Auditor Location | Shanghai, China |
| Auditor Firm ID | 3027 |
| Business Contact [Member] | |
| Entity Addresses [Line Items] | |
| Entity Address, Address Line One | No 8 Zhuyuan 3rd Street |
| Entity Address, Address Line Two | Area 3 |
| Entity Address, Address Line Three | Tianzhu Comprehensive Bonded Zone |
| Entity Address, City or Town | Beijing |
| Entity Address, Country | CN |
| City Area Code | 86 (10) |
| Local Phone Number | 6408 5088 |
| Contact Personnel Name | Xiaoqiang, Wei |
| Contact Personnel Fax Number | +86 (10) 6408 5888 |
