Objective To investigate the status quo and influential factors of undergraduates’sexuality.Method803 college students from some university in Changchun were selected to do questionnaires with the method of stratified random sampling.Results The incidence of non-marital sex in these college students was 12.5%and the differences in incidence of sexuality between different grades

gender and student original places were statistically significant（P<0.01）.63.0percent of students had only one sexual partner and 37.0percent had two or more sexual partners.82.0percent of college students took contraceptive measures mainly by using condoms

but only 38.0percent used condoms every time.Conclusion College students are open-minded to non-marital sex with a higher demand for sexual knowledge.Their sexual health education should be strengthened by joint effort of family

university and society.