The purpose of the study was to assess the effectiveness of the use of psycho-diagnostics in the practical work of the coach. The received facts confirm the importance of information received with the help of psychodiagnostics about motivation and the objectives of the young athletes, the relationship in the sports team, as well as the attitude of young athletes to the upcoming competitions. It is proved that the coach’s work with young athletes on the basis of data of psycho-diagnostics allows improving the organization of psychological work with young athletes.