According to a survey, nearly one-third of adolescents worldwide have suffered from bullying in schools. The frequent occurrence of school violence and bullying in primary and secondary school campuses poses a great threat to adolescents' sense of security, and in serious cases, even jeopardizes their lives. The class, as a long-term long-term living and learning field for teenagers, has become the smallest unit of intervention and management of bullying in schools, and it is especially important to start from the perspective of class management from a small to a large scale, to guide teenagers to be positive and healthy in their mentality, to be courteous and ethical in their behaviors, and to block the occurrence of bullying in schools at the root of the development of teaching and learning multi-subjects.