| Cover | Aug. 19, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 19, 2022 |
| Entity File Number | 001-34647 |
| Entity Registrant Name | ZW Data Action Technologies Inc. |
| Entity Central Index Key | 0001376321 |
| Entity Tax Identification Number | 20-4672080 |
| Entity Incorporation, State or Country Code | NV |
| Entity Address, Address Line One | Room 1106, Xinghuo Keji Plaza, No. 2 Fufeng Road, Fengtai District |
| Entity Address, City or Town | Beijing |
| Entity Address, Country | CN |
| Entity Address, Postal Zip Code | 100070 |
| Country Region | 86 |
| City Area Code | 10 |
| Local Phone Number | 60846616 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.001 |
| Trading Symbol | CNET |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
