| Cover | Sep. 15, 2022 |
| Cover [Abstract] | |
| Entity Registrant Name | Tenax Therapeutics, Inc. |
| Entity Central Index Key | 0000034956 |
| Document Type | 8-K |
| Amendment Flag | false |
| Entity Emerging Growth Company | false |
| Document Period End Date | Sep. 15, 2022 |
| Entity Incorporation State Country Code | DE |
| Entity Tax Identification Number | 26-2593535 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity File Number | 001-34600 |
| Entity Address Address Line 1 | ONE Copley Parkway |
| Entity Address Address Line 2 | Suite 490 |
| Entity Address City Or Town | Morrisville |
| Entity Address Postal Zip Code | 27560 |
| City Area Code | 919 |
| Local Phone Number | 855-2100 |
| Security 12b Title | Common Stock, $0.0001 par value per share |
| Trading Symbol | TENX |
| Security Exchange Name | NASDAQ |
| Entity Address State Or Province | NC |
