| Cover | May 11, 2023 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 11, 2023 |
| Entity File Number | 001-41608 |
| Entity Registrant Name | Structure Therapeutics Inc. |
| Entity Central Index Key | 0001888886 |
| Entity Tax Identification Number | 98-1480821 |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | 611 Gateway Blvd. |
| Entity Address, Address Line Two | Suite 223 |
| Entity Address, City or Town | South San Francisco |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94080 |
| City Area Code | 628 |
| Local Phone Number | 229-9277 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| American Depositary Shares (ADSs), each representing three ordinary shares, par value $0.0001 per ordinary share | |
| Document Information [Line Items] | |
| Title of 12(b) Security | American Depositary Shares (ADSs), each representing three ordinary shares, par value $0.0001 per ordinary share |
| Trading Symbol | GPCR |
| Security Exchange Name | NASDAQ |
| Ordinary shares, par value $0.0001 per share* | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Ordinary shares, par value $0.0001 per share* |
| No Trading Symbol Flag | true |
| Security Exchange Name | NASDAQ |
