目的通过开展学生故意伤害行为调查,了解玉溪市大学、高中、初中在校就读学生故意伤害发生的主要原因、影响因素及行为差异,为在学校开展预防伤害健康干预提供理论依据。方法采用“中国青少年健康相关行为调查问卷”进行调查,剔除填写不完整的问卷,采用Epidata 3.0录入全部数据,导入Excel,用SPSS 11.5进行统计分析。结果玉溪市大学、高中、初中在校就读学生形成故意伤害的主要原因:因为学习压力而不愉快、感到狐独、被恶意取笑、经常被开色情玩笑等;在过去1年中,有68.6%的学生因为学习压力而不愉快,有57.9%的学生曾感到狐独;过去30天,曾被恶意取笑的占45.9%,经常被开色情玩笑等经常被开色情玩笑占30.5%,有13.2%的学生曾经故意伤害过自己;有10.5%的学生考虑过自杀,6.8%作过自杀的计划,2.5%采取措施试图自杀;35.8%的学生想过离家出走。结论玉溪市大学、高中、初中学生故意伤害行为的发生率较高,应加强伤害干预,把伤害防制纳入到学生健康管理工作,并切实采取有效措施,建立学校-家庭社区三联屏障,预防和降低学生故意伤害的发生。 Objective To investigate the main reasons, influencing factors and behavioral differences of students’ intentional injuries in college, high school and junior high school in Yuxi City through investigating the behavior of intentional injury of students and provide a theoretical basis for health intervention in schools. Methods The questionnaire of health behaviors of adolescents in China was used to investigate. The incomplete questionnaires were excluded and all the data were recorded using Epidata 3.0. The data were imported into Excel and analyzed by SPSS 11.5. Results Yuxi City, high school, junior high school students enrolled students form the main reason for intentional harm: because of stress and unpleasant, feel fox, maliciously teasing, often being pornographic joke; in the past year, there are 68.6% 57.9% of students felt fox in the past 30 days; 45.9% have been maliciously teased in the past 30.5%, 30.5% of them are often sexually explicit jokers, 13.2% students 10.5% of students considered suicide; 6.8% committed suicide; 2.5% took measures to commit suicide; and 35.8% of students thought of running away from home. Conclusions The incidence of intentional injuries among college, high school and junior high school students in Yuxi City is relatively high. Injury intervention should be strengthened to include injury prevention and control in student health management. Effective measures should be taken to establish a triple barrier in school-family community to prevent and Reduce the occurrence of students intentional injuries.