v3.25.2
Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2025
Jul. 31, 2025
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2025  
Document Transition Report false  
Securities Act File Number 001-41608  
Entity Registrant Name Structure Therapeutics Inc.  
Entity Incorporation, State or Country Code E9  
Entity Tax Identification Number 98-1480821  
Entity Address, Address Line One 601 Gateway Blvd.  
Entity Address, Address Line Two Suite 900  
Entity Address, City or Town South San Francisco  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 94080  
City Area Code 650  
Local Phone Number 457-1978  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   172,793,818
Entity Central Index Key 0001888886  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Amendment Flag false  
American Depositary Shares (ADSs)    
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  
Common shares    
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