| Document and Entity Information | Oct. 18, 2021 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001823593 |
| Document Type | 8-K |
| Document Period End Date | Oct. 18, 2021 |
| Entity Registrant Name | TuSimple Holdings Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-40326 |
| Entity Tax Identification Number | 86-2341575 |
| Entity Address, Address Line One | TuSimple Holdings Inc. |
| Entity Address, Address Line Two | 9191 Towne Centre Drive |
| Entity Address, Address Line Three | Suite 600 |
| Entity Address, City or Town | San Diego |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 92122 |
| City Area Code | (619) |
| Local Phone Number | 916-3144 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Class A Common Stock, par value $0.0001 |
| Trading Symbol | TSP |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
