The purpose of this study is to find effective ways to intervene in early adolescents’ depression by verifying whether social withdrawal and peer alienation have a mediating effect in the relationship between child abuse by parents and depression in early adolescents. For the purpose of the the study, authors used the sixth year dataset of Korea Children and Youth Panel Study(KCYPS, 2015). A total of 2,067 students were inclused in the final analysis, and the authors used a structural equation model to test direct and direct effects of child abuse on depression in early adolescents. The results are as follows. First, child abuse by parents had a direct impact on early adolescents’ depression, and both social withdrawal and peer alienation were partially mediated in the effects of child abuse by parents on early adolescents’ depression. Based on the results, authors proposed that teachers and school social workers pay close attention to direct and indirect effects of child abuse by parents on depression via social withdrawal and peer alienation in early adolelscents so as to promote mental health in them.