| Cover | Feb. 14, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 14, 2024 |
| Entity File Number | 001-38605 |
| Entity Registrant Name | GREENLAND TECHNOLOGIES HOLDING CORPORATION |
| Entity Central Index Key | 0001735041 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Incorporation, State or Country Code | D8 |
| Entity Address, Address Line One | 50 Millstone Road |
| Entity Address, Address Line Two | Building 400 Suite 130 |
| Entity Address, City or Town | East Windsor |
| Entity Address, State or Province | NJ |
| Entity Address, Country | US |
| Entity Address, Postal Zip Code | 08512 |
| City Area Code | 888 |
| Local Phone Number | 827-4832 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Ordinary shares, no par value |
| Trading Symbol | GTEC |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
