目的通过调查了解某中学卡他性结膜炎暴发疫情的原因、流行特征,以提供预防与控制卡他性结膜炎暴发措施。方法采用现场个案流行病学调查,根据患者临床表现及症状进行诊断。结果该学校共有住校生839人,共发病48人,罹患率为5.71%;患者均为住校男生,罹患率为10.91%,流行共13 d。结论该卡他性结膜炎暴发疫情主要为住校男生。 Objective To investigate the causes and prevalence of catarrhal conjunctivitis outbreaks in a secondary school so as to provide measures for the prevention and control of catarrhal conjunctivitis outbreaks. Methods The case of epidemiological investigation was conducted and the diagnosis was made according to the clinical manifestations and symptoms of the patients. Results A total of 839 live-in students were admitted to the school. A total of 48 people were affected and the attack rate was 5.71%. All of the students were live-in boys with an attack rate of 10.91% and a prevalence of 13 days. Conclusion The outbreak of catarrhal conjunctivitis is mainly for male students living in school.