Abstract: Objective To understand the accident injury behaviors among junior high school students in peasant worker's children school for injury prevention and intervention.Methods The cluster random sampling method was adopted to perform anonymous questionnaire survey in 5 791 junior high schools tudents from 11 peasant worker's children schools and 16 urban public schools of Guangdong province.Results The incidence rate of fighting(30.5%),self-injurious behavior(11.2%),being bullied(13.1%),feelings of lonely(12.9%),sad(11.7%)and insomnia(10.2%)were higher in peasant worker's children school students than that of in urban public schools tudents.The feeling of unsafety(8.0%)and the unsafe game playing(90.4%)were lower in peasant workerπs children school students than that of in urban public school students.The behaviors of riding and walking against regulation,swimming in unsafe water,fighting were higher in boys than that of in girls.But the feelings of lonely,gloomy,insomnia,sad and hopeless,self-injurious behavior were higher in the girls than that of in the boys.Conclusion Violence behavior and suicide related psychological problems were more serious in peasant worker's children school students than that of urban public school students.More attentions should be paid to social adaptation of the children of peasant workers.