This study aims to explore the overlapping influences of the home and school on peer victimization in adolescents under the notion of home-school partnership and to investigate how the parent-child relationship, teacher-student relationship, teenage depressive symptoms are related to peer victimization by constructing a moderated mediation model. It surveyed 1,710 students in 5-8 grades, using the Inventory of Parent and Peer Attachment, Student-Teacher Relationship Scale (brief version), Multidimensional Peer Victimization Scale, and Center for Epidemiologic Studies Depression Scale (brief version). Research findings show that the parent-child relationship had a direct impact on peer victimization and indirectly affected peer victimization via the mediation of teenage depressive symptoms; and that teacher-student relationships had moderating effects on the three paths in the mediation model, playing roles in enhancing the protection effect of the parent-child relationship against peer victimization, weakening the possible impact of the parent-child relationship on teenager depression, and alleviating the predictive effect of depressive symptoms on peer victimization. The research suggests that home-school partnership is a viable avenue for the prevention of school bullying.