Objective    To investigate the differences of perfectionism in undergraduates with different background.     Methods    Stratified-random sampling was used to recruit 1 298 undergraduates from two colleges in Chongqing

and Chinese Frost multidimensional perfectionism scale (CFMPS) was applied to survey their perfectionism. Totally 1 245 questionaires were taken back and the response rate was 95.9%.     Results    There was significant difference of CFMPS score among those who were only child or not in their family (P=0.009)

of different performance records (P=0.008) and different mother’s education background (P=0.001).     Conclusion    Perfectionism is a stable personality

and shows some significant differences among the undergraduates with different background.