PURPOSE: This study was to survey the university student's sex role identity type, sexual consciousness, sexual behaviors, and sexual impulse. METHODS: The subjects were 332 university students who were eligible and agreed to participate in this study. Data were collected from May 22 to June 9, 2007. RESULTS: Difference of sex role identity type by gender was that the androgyny was the most prevalent. There was a difference in sex role identity type which was classified by gender. Boy students were high in undifferentiation, where as girl students were high in androgyny. In difference of sexual consciousness and sexual behaviors and sexual impulse by gender, it showed that boy students were higher girl students. Difference of sexual consciousness by sex role identity type was high in masculinity. CONCLUSION: To improve positively the attitudes to sexuality of students who have had undifferentiation type, it need to provide various sexual education and sexual counselling.