Objective To find out the actuality of college students’sex concept and provide basis for college students’sex education.Method An questionnaire survey was conducted among 866 college students in southwest China to investigate their attitudes to sex before and out of marriage. Results 68.16 % of male students and 57.12 % of female students agree to have sex before marriage

46.65 % of college students can restraint to their sweethearts’sex desire; 58.60 % of male students and 32.80 % of female students think that sexual intercourse out of marriage is unmoral and should be punished by law; 73.90 % of college students don’t oppose sex freedom or sex liberation; 32.56 % of college students think that sex virtue is important to both male and female; 30.14 % of college students think that if they have sex

they will get married. Conclusion College students in southwest of china have contradiction between open sex concept and keeping sex intercourse

college students’sex virtue is weakening

sex don’t connote marriage. So we should reinforce college students sex education and make it rational.