Abstract: Objective To understand the cognitive level,coping behavior,sexual behavior,and prevention and treatment of sexually transmitted diseases（STD） among undergraduate students in Shaanxi Province,and to provide reference for the development of health education on STD among college students. Methods In October 2022,a cluster sampling method was used to select undergraduate students in Shaanxi Province as the research subjects,a survey questionnaire on cognition and coping behavior of sexually transmitted diseases among college students was developed,and the data were analyzed after being filled in anonymously by students voluntarily. Results 35.51% of the students had a high cognitive level of STD,and the cognitive level of six STD was a negative shrinkage radar map indicating that the students' cognitive level was in a bad state. 51.40% of students deliberately avoided STD patients,girls,senior students had a higher fear and had a higher willingness to screen for STD before having sex（all P<0.05）. The students with higher cognitive level had significantly higher in deliberately avoiding sexually transmitted disease patients,the possibility of infection of STD and the willingness of active screening before having sex（all P<0.05）. The incidence of sexual activity was 15.58%,among which 87.00% had taken measures to prevent STD,and 26.00% had sought relevant examination and treatment because they felt ill or suspected to have contracted STD. Conclusion The cognitive level of STD among undergraduate students in Shaanxi Province is not high,and the awareness of coping behavior is not strong. Improving their cognitive level can guide them to actively cope with behaviors,especially by strengthening health education for female students,younger students,rural students,parents with low educational levels,and students with left behind experience.

Key words: Undergraduate students, Sexually transmitted diseases, Cognition, Coping behavior