| Cover | Oct. 03, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 3, 2021 |
| Entity File Number | 001-34024 |
| Entity Registrant Name | SINO-GLOBAL SHIPPING AMERICA, LTD. |
| Entity Central Index Key | 0001422892 |
| Entity Tax Identification Number | 11-3588546 |
| Entity Incorporation, State or Country Code | VA |
| Entity Address, Address Line One | 1044 Northern Boulevard |
| Entity Address, Address Line Two | Suite 305 |
| Entity Address, City or Town | Roslyn |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 11576-1514 |
| City Area Code | (718) |
| Local Phone Number | 888-1814 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, no par value |
| Trading Symbol | SINO |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
