Abstract The psychological development of students is characterized by continuity and discontinuity. At the same time, the psychological development of students in different academic stages is interrelated and gradual. To promote mental health of children and adolescents, considering the widespread, high prevalence and frequent occurrence of students psychological problems and lack of integrated connection of mental health education in different school stages, it is urgent to build a "five integration" mental health education system intergrating kindergarten, primary school, secondary school and university, which includes cognition integration, system integration, information integration, research integration, and management integration, aiming to unify our notion, goal, content and action, provide students with timely, professional and effective mental health services, prevent the occurrence of mental illnesses, as well as create positive psychological qualities.