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Cover
 12 Months Ended
Dec. 31, 2022
shares
Document Information [Line Items]  
Document Type 20-F/A
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, 2022
Document Fiscal Period Focus FY
Document Fiscal Year Focus 2022
Current Fiscal Year End Date --12-31
Entity File Number 001-36430
Entity Registrant Name Tuniu Corporation
Entity Central Index Key 0001597095
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One 6, 8-12th Floor, Building 6-A, Juhuiyuan
Entity Address, Address Line Two No. 108 Xuanwudadao
Entity Address, Address Line Three Xuanwu District
Entity Address, City or Town Nanjing
Entity Address, Country CN
Entity Address, Postal Zip Code 210023
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
ICFR Auditor Attestation Flag true
Auditor Name PricewaterhouseCoopers Zhong Tian LLP
Auditor Location Shanghai, the People’s Republic of China
Auditor Firm ID 1424
ADR [Member]  
Document Information [Line Items]  
Title of 12(b) Security American depositary shares
Trading Symbol TOUR
Security Exchange Name NASDAQ
Common Class A [Member]  
Document Information [Line Items]  
Title of 12(b) Security Class A ordinary shares, par value
No Trading Symbol Flag true
Security Exchange Name NASDAQ
Entity Common Stock, Shares Outstanding 354,006,112
Common Class B [Member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 17,373,500
Business Contact [Member]  
Document Information [Line Items]  
Entity Address, Address Line One 6, 8-12th Floor, Building 6-A, Juhuiyuan
Entity Address, Address Line Two No. 108 Xuanwudadao
Entity Address, Address Line Three Xuanwu District
Entity Address, City or Town Nanjing
Entity Address, Country CN
Entity Address, Postal Zip Code 210023
City Area Code 86
Local Phone Number 86853969
Contact Personnel Name Mr. Anqiang Chen
Contact Personnel Email Address ir@tuniu.com