Since　2005,　the　term　Web　2.　0　has　gradually　become　a　hot　topic　on　the　Internet.　Web　2.　0　lets　users　create　web　contents　as　distinct　from　webmasters　or　web　coders.　Web　2.　0　has　come　to　our　work,　our　life　and　even　has　become　an　indispensable　part　of　our　web-life.　Its　applications　have　already　been　widespread　in　many　fields　on　the　Internet.　So　far,　China　has　about　137　million　netizens　[1],　therefore　its　Web　2.　0　market　is　so　attractive　that　many　sources　of　venture　capital　flow　into　the　Chinese　Web　2.　0　market　and　there　are　also　a　lot　of　new　Web　2.　0　companies　in　China.　However,　the　development　of　Web　2.　0　in　China　is　accompanied　by　some　problems　and　obstacles.　In　this　paper,　we　will　mainly　discuss　Web　2.　0　applications　in　China,　with　their　current　problems　and　future　development　trends.　©　2007,　Springer　New　York　LLC.　All　rights　reserved.