| Document And Entity Information | Mar. 30, 2023 |
| Document Information [Line Items] | |
| Entity, Registrant Name | REVIVA PHARMACEUTICALS HOLDINGS, INC. |
| Document, Type | 8-K |
| Document, Period End Date | Mar. 30, 2023 |
| Entity, Incorporation, State or Country Code | DE |
| Entity, File Number | 001-38634 |
| Entity, Tax Identification Number | 85-4306526 |
| Entity, Address, Address Line One | 19925 Stevens Creek Blvd., Suite 100 |
| Entity, Address, City or Town | Cupertino |
| Entity, Address, State or Province | CA |
| Entity, Address, Postal Zip Code | 95014 |
| City Area Code | 408 |
| Local Phone Number | 501-8881 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity, Emerging Growth Company | true |
| Entity, Ex Transition Period | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0001742927 |
| CommonStock Custom [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | RVPH |
| Security Exchange Name | NASDAQ |
| WarrantsToPurchaseOneShareOfCommonStock Custom [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants to purchase one share of Common Stock |
| Trading Symbol | RVPHW |
| Security Exchange Name | NASDAQ |
