An investigation on school bullying in 12 primary and secondary schools of Beijing was conducted. The research questions were as follows：what are the characteristics of bully victims？what are the results of bullying？what measures can be taken to reduce school bullying？The main findings were：（1）Primary school students，boys，non-native students，students of average schools and students with lower economic status were more vulnerable to bullying；（2）Bullied had negative impacts on students’ non-cognitive abilities，school engagements and learning performances；and（3）Positive teacher-student communications，peer relationships，student-parent communications and more parental emotional support could effectively reduce the probability of being bullied.