Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 48 2 2019 02 01 270 277 Jinting WU Second Affiliated Hospital of Wannan Medical College, Wuhu, 241002, China Hairong LIU Department of Public Administration, Wannan Medical College, Wuhu, 241001, China 2019 02 05 Background: This study investigated the nonsuicidal self-injury (NSSI) presentation and the features of coping methods among college students, in addition to analyzing the factors that influence self-injury behavior. Methods: From April to November 2016, 2,520 undergraduate students who were studying in some colleges in Anhui Province in China were surveyed using the Self-Injury Behavioral Survey Questionnaire and the Coping Styles Questionnaire (CSQ). Results: The detection rate of self-injury behavior among college students was 13.73%. Frequent Internet use and smoking were associated with self-injury behavior (P < 0.05). There were statistically significant differences between the self-injury group and the non-self-injury group in terms of the coping methods of problem-solving, self-reproach, help-seeking, and illusions (P < 0.01). According to the logistic regression analysis of the students, their place of origin, mother’s education, family finances, family type, family relationships, gender, frequent Internet use, and smoking were associated with self-injury behavior (P< 0.01). Self-reproach and withdrawal were risk factors for self-injury behavior while problem-solving and rationalization were protective factors for self-injury behavior. Conclusion: Students who frequently use the Internet and smoke are more prone to self-injury. College students’ choices of problem-solving and rational coping styles in the face of pressure are conducive to preventing nonsuicidal self-injury.     https://ijph.tums.ac.ir/index.php/ijph/article/view/16147 https://ijph.tums.ac.ir/index.php/ijph/article/download/16147/6284