Introduction. One of the priority tasks of Russian education is the task of moral and patriotic education of students. It is fully implemented in the cadet education system. Psychological conditions for the formation of the experience of moral behavior of cadets is the diagnosis and correction of negative personal and behavioral manifestations of students in critical and conflict situations. The correction is aimed at overcoming the destructive behavior of pupils and creating a positive personal basis for the formation of the moral orientation of cadets.Materials and Methods. Theoretical methods: analysis of scientific publications, psychological and pedagogical literature; method of generalization and systematization of information. Empirical methods: testing. Methods of data analysis quantitative analysis, qualitative analysis, interpretive analysis.Results. The essential role of diagnostics is noted in identifying personal characteristics (character accentuations, aggressiveness of adolescents), as well as their behavioral manifestations (behavior in conflict), which are an obstacle to the organization of effective work on the formation of the experience of moral behavior of cadet corps students. Recommendations are given on the harmonization of the personal characteristics of cadets and the education of their moral qualities.Discussion and Conclusions. One of the directions of moral education of adolescent cadets is the proactive diagnosis and correction of personal qualities and behavioral manifestations that lead to destructive behavior. As a result of the study, the most characteristic personality traits and behavioral manifestations for adolescent cadets were identified.