Objective. To identify age-related psychopathological disorders and psychological characteristics of mental development and mental state of minors who committed suicide. Material and methods. The study included a continuous sample of 285 reports of post-mortem psychological-psychiatric forensic assessment (CSPE) of juveniles, aged 11 to 17 years (average age 14.92±1.82), who committed suicide, in 7 federal districts of the Russian Federation. Within the total sample, two age groups were compared: adolescents from 11 to 14 years old (1) and 15—17 years old (2). Document analysis, clinical-psychopathological, clinical-psychological, qualitative and statistical methods were used. Results and conclusion. Within the period from 11 to 17 years, the exponential growth of suicide rate is observed. An increase of family- and school-related psychological problems as well as difficulties in the relationship with the opposite sex are typical for the older group. Simultaneously, the effect of maladaptive individual features increases and psychopathological states and disorders, including, stress and adjustment disorders and depressive disorders, develop.