In order to explore the use of social networks of college students and its influence on social behavior,the study collects and analyzes data with questionnaire survey.The results show that students generally use social networks,mainly for maintaining social relationships,obtaining information and sharing personal life.Students hold a attitude towards the use of social networks.One-way ANOVA shows that there is no significant effect of gender on social network use behavior,while there are significant differences in grade,discipline and time of use;The scores of freshmen and juniors,as well as liberal arts,medical and engineering students on frequency of use,purpose of use,learning impact and social behavior impact are high.