Abstract: Objective There were 956 cases of injuries among primary and secondary students in 2006-2009 and the gender ratio was 2.87:1(boys vs girls).Injuries in junior middle school (48.95%) were the most of all and they also happened in primary school (36.19%) and Senior high school(14.85%).Our objective was to acquire epidemiological characteristics of injury and its influence factors among primary and secondary students in Zhabei District of shanghai, and to explore its occurrence status,thus providing effective tragedy and countermeasure for injury intervening for government.Methods "Students' Injury Case Cards" from 2006 to 2009 school year were collected from primary and secondary students,and then the reasons,types and characteristics of the injuries were investigated,confirmed,registered and analysed.Results It was found that the main type of injury was reported as follows:528 cases of falling down(55.23%) and 268 cases of crash/extrusion(28.03%).It was also found that the main injury was fracture(55.71%).The amount of dislocation/sprain/pulling in middle school was more than in primary school.Further analysis showed that injury often happened in breaks between classes(31.38%),in the middle of classes(27.51%),during festival and holiday(13.81%)and at times after-school(13.60%).On the other hand injury usually occurred on shoulder(44.03%),hip(31.24%)and head(19.81%).Conclusion The analysispresents an austerity picture of injury among primary and secondary students,indicating that interfering measure should be implemented according to the characteristics of injury occurring in schools.