| Cover - shares | 12 Months Ended | |
| Dec. 31, 2022 | May 10, 2023 | |
| Entity Addresses [Line Items] | ||
| Document Type | 20-F/A | |
| Amendment Flag | true | |
| Amendment Description | This Amendment No. 1 on Form 20-F/A (the “Amendment”) amends the Annual Report on Form 20-F for the year ended December 31, 2022 of WANG & LEE GROUP, Inc. (the “Company”), as originally filed with the U.S. Securities and Exchange Commission on May 15, 2023 (the “Original Filing”). The Company is filing the Amendment solely to amend and restate Item 3 “Key Information” in order to address the SEC comment letter received by the Company | |
| 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 | 001-41681 | |
| Entity Registrant Name | WANG & LEE GROUP, Inc. | |
| Entity Central Index Key | 0001899658 | |
| Entity Incorporation, State or Country Code | D8 | |
| Entity Address, Address Line One | 5-6/F Wing Tai Factory Building | |
| Entity Address, Address Line Two | 3 Tai Yip Street | |
| Entity Address, City or Town | Kwun Tong | |
| Entity Address, Country | HK | |
| Title of 12(b) Security | Ordinary Shares with no par value | |
| Trading Symbol | WLGS | |
| Security Exchange Name | NASDAQ | |
| Entity Well-known Seasoned Issuer | No | |
| Entity Voluntary Filers | No | |
| Entity Current Reporting Status | No | |
| Entity Interactive Data Current | Yes | |
| Entity Filer Category | Non-accelerated Filer | |
| Entity Emerging Growth Company | true | |
| Elected Not To Use the Extended Transition Period | false | |
| Document Accounting Standard | U.S. GAAP | |
| Entity Shell Company | false | |
| Entity Common Stock, Shares Outstanding | 15,096,331 | |
| Document Financial Statement Error Correction [Flag] | false | |
| Auditor Firm ID | 1171 | |
| Auditor Name | WWC, P.C. | |
| Auditor Location | San Mateo, California | |
| Business Contact [Member] | ||
| Entity Addresses [Line Items] | ||
| Entity Address, Address Line One | 5-6/F Wing Tai Factory Building | |
| Entity Address, Address Line Two | 3 Tai Yip Street | |
| Entity Address, City or Town | Kwun Tong | |
| Entity Address, Country | HK | |
| City Area Code | +852 | |
| Local Phone Number | 2889 1313 | |
| Contact Personnel Name | Pui Lung Ho | |
| Contact Personnel Email Address | mgt@wangnlee.com.hk |
