v3.26.1
Cover - shares
 12 Months Ended
Dec. 31, 2025
Feb. 28, 2026
Entity Addresses [Line Items]    
Document Type 20-F  
Amendment Flag false  
Document Registration Statement false  
Document Annual Report true  
Document Transition Report false  
Document Shell Company Report false  
Document Period End Date Dec. 31, 2025  
Document Fiscal Period Focus FY  
Document Fiscal Year Focus 2025  
Current Fiscal Year End Date --12-31  
Entity File Number 001-39177  
Entity Registrant Name Sound Group Inc.  
Entity Central Index Key 0001783407  
Entity Incorporation, State or Country Code E9  
Entity Address, Address Line One 108 Robinson Road  
Entity Address, Address Line Two #09-01  
Entity Address, City or Town Singapore  
Entity Address, Country SG  
Entity Address, Postal Zip Code 068900  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Emerging Growth Company false  
Document Accounting Standard U.S. GAAP  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   834,829,150
ICFR Auditor Attestation Flag true  
Document Financial Statement Error Correction [Flag] false  
Auditor Firm ID 6907  
Auditor Opinion [Text Block] We have audited the accompanying consolidated balance sheets of Sound Group Inc. (the “Company”) and its subsidiaries (the “Group”) as of December 31, 2025 and 2024, and the related consolidated statements of operations and comprehensive (loss)/income, changes in shareholders’ equity and cash flows for the years ended December 31, 2025, 2024 and 2023, and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Group as of December 31, 2025 and 2024, and the results of its operations and its cash flows for the years ended December 31, 2025, 2024 and 2023, in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”).  
Auditor Name Enrome LLP  
Auditor Location Singapore  
American depositary shares, each ADS represents two hundred (200) Class A ordinary shares, par value US$0.0001 per share    
Entity Addresses [Line Items]    
Title of 12(b) Security American depositary shares, each ADS represents two hundred (200) Class A ordinary shares, par value US$0.0001 per share  
Trading Symbol SOGP  
Security Exchange Name NASDAQ  
Class A ordinary shares, par value US$0.0001 per share *    
Entity Addresses [Line Items]    
Title of 12(b) Security Class A ordinary shares, par value US$0.0001 per share *  
No Trading Symbol Flag true  
Security Exchange Name NASDAQ  
Business Contact [Member]    
Entity Addresses [Line Items]    
Entity Address, Address Line One 108 Robinson Road  
Entity Address, Address Line Two #09-01  
Entity Address, City or Town Singapore  
Entity Address, Country SG  
Entity Address, Postal Zip Code 068900  
City Area Code +65  
Local Phone Number 62021360  
Contact Personnel Name Chengfang Lu  
Contact Personnel Email Address erris.lu@soundgroupinc.com