Objective: To explore the distribution of sex role and other relational questions of the students in colleges different in the sex ratio. Method: In October 2007,1451 samples of undergraduates of two colleges different in the sex ratio of Wuhan were randomly se- lected for the College Sex Role . Results: (1)There are significant differences in sex role between male and female;(2)It is an important period that gender role developments during the period of college. Female students' masculinity ration stably increase when their grade goes ...