1、UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWASHINGTON,D.C.20549FORM 20-F(Mark One)?REGISTRATION STATEMENT PURSUANT TO SECTION 12(b)OR(g)OF THE SECURITIES EXCHANGE ACT OF 1934OR?ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year ended December 3

2、1,2019.OR?TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934OR?SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934Date of event requiring this shell company report.For the transition period from toCommission file number:001-

3、36430Tuniu Corporation(Exact name of Registrant as specified in its charter)N/A(Translation of Registrants name into English)Cayman Islands(Jurisdiction of incorporation or organization)Tuniu Building No.699-32Xuanwudadao,Xuanwu DistrictNanjing,Jiangsu Province 210042The Peoples Republic of China(Ad

4、dress of principal executive offices)Ms.Maria Yi Xin,Chief Financial OfficerTelephone:+(86 25)6960-9988Email:Tuniu Building No.699-32Xuanwudadao,Xuanwu DistrictNanjing,Jiangsu Province 210042The Peoples Republic of China(Name,Telephone,E-mail and/or Facsimile number and Address of Company Contact Pe

5、rson)Securities registered or to be registered pursuant to Section 12(b)of the Act.Title of each classTrading Symbol(s)Name of each exchange on which registeredAmerican depositary shares(one American depositary share representing three Class A ordinary shares,par value US$0.0001 per share)TOURThe Na

6、sdaq Stock Market LLC(The Nasdaq Global Market)Class A ordinary shares,par value US$0.0001 per share*The Nasdaq Stock Market LLC(The Nasdaq Global Market)*Not for trading,but only in connection with the listing on The Nasdaq Global Market of American depositary shares.Securities registered or to be