Abstract. The research problem is determined by the necessity to reveal psychophysiological and psychological indicators that determine the success of sports activity in young boxers. Taking into account these indicators will allow planning and timely correcting training and competitive activities in athletes. Aim. The purpose of the article is to reveal psychophysiological and psychological features that determine the success of sports activity in young boxers. Materials and methods. The study involved 36 boxers of the I sports category and 14 teenagers with a sports qualification of a candidate for master of sports (Republican boarding school No 5, Ufa, Russia). The survey was conducted in a special preparatory period. The following tests were used: the "Motivation for success and fear of failure" questionnaire by A.A. Rean; the Eysenck personality questionnaire; the Spielberger-Khanin anxiety inventory, the Lusher color test; psychophysiological tests such as the “simple visual-motor reaction”, “choice reaction”, “discrimination reaction” and “reaction to a moving object” conducted using NS-Psychotest hardware-software complex (Neurosoft, Ivanovo). Mathematical and statistical data processing was carried out with MS Excel, factor analysis was performed in the software package SPSS v. 23. Results. The contribution of psychophysiological and psychological features to the success of young boxers is determined. Conclusion. The psychophysiological and psychological features that determine the success of the sports activities of young boxers are revealed such as the functional status and efficiency of the central nervous system, focus on success, the optimal level of situational anxiety.