RELATED PARTY TRANSACTIONS (Commission, Advertising and Other Revenues) (Details) (CNY)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Related Party Transaction [Line Items]      
Commission, advertising and other revenues 92,518,130 32,870,516 14,983,962
Expedia (refer to a1) [Member]
     
Related Party Transaction [Line Items]      
Commission, advertising and other revenues 14,804,767 3,701,192   
Egencia Shanghai (refer to a2) [Member]
     
Related Party Transaction [Line Items]      
Commission, advertising and other revenues 36,153 44,358 47,154
Egencia Shanghai (refer to a2) [Member]
     
Related Party Transaction [Line Items]      
Commission, advertising and other revenues 417,382 198,631 97,378
Hotels.com (refer to a3) [Member]
     
Related Party Transaction [Line Items]      
Commission, advertising and other revenues    5,326,181 3,648,431
EAN (refer to a4) [Member]
     
Related Party Transaction [Line Items]      
Commission, advertising and other revenues 81,659,483 26,127,688 10,112,820
Expedia (refer to a5) [Member]
     
Related Party Transaction [Line Items]      
Commission, advertising and other revenues 1,185,101 394,003 407,474
Kuxun (refer to b4) [Member]
     
Related Party Transaction [Line Items]      
Commission, advertising and other revenues 94,745 339,669 650,020
2012 Second Affiliate Company (refer to g) [Member]
     
Related Party Transaction [Line Items]      
Commission, advertising and other revenues 9,032,926 263,328   
Other [Member]
     
Related Party Transaction [Line Items]      
Commission, advertising and other revenues 92,340 176,298 20,685