The relevance of the research problem presented in the article lies in the need to improve the prevention of deviant behavior in adolescents in psychological and pedagogical activities. The object of the research is the deviant behavior of adolescents. The subject of the research is the prevention of deviant behavior in adolescents as an integral part of the activities of specialists in the psychological and pedagogical service. The aim of the research is to study the theoretical foundations of the prevention of deviant behavior in adolescents within the framework of the activities of specialists in psychological and pedagogical activity. Research methods: research and analysis of scientific literature on research issues; comparison, analysis and generalization of regulations and statistics; analysis of empirical data. As a result of the study, the following data were obtained: theoretical foundations of the prevention of deviant behavior in adolescents as an integral part of the activities of specialists in psychological and pedagogical activity; The experience of prevention of deviant behavior of adolescents in educational institutions is analyzed.