Abstract: The paper studies the entertainment activities concept, its role within the educational system, upbringing and children’s leisure time organization for the purpose of their psychophysiological health and development ensuring. The author believes that the entertainment activities concept is actively used at the present time in the practice of organizations and institutions of all forms of ownership in different educational and leisure events for the purpose of children’s optimal psychological and physiological health and development improvement. This fact causes the need for the conceptual analysis of this category to include it into the categorical framework of pedagogics and medicine. The author applies the statistical method, the method of historicism, comparative-legal study, the functional method, comparison, analysis and interviewing. Upon condition that the recommendations of this study are observed, entertainment activities in sports and recreation organizations for children can become the modern creative link for the use of any other pedagogical, psychological, cultural, educational and leisure technologies, thus ensuring the optimal psychological and physiological health and development of children. 

Abstract: This article is devoted to the analysis of some questions of organization of entertainment activities in the sports institutions within the system of prevention of deviant and delinquent behavior of children. The author believes that the modern dynamic development of Russian society is impossible without the development and implementation of complex measures for the improvement and growth of "human capital", because man, his rights and freedoms are the supreme value that is enshrined in the second article of the Constitution of the Russian Federation. It seems clear that the improvement and growth of "human capital" in our country is impossible without providing adequate conditions for education, upbringing, rehabilitation and organization of leisure of the younger generation. A huge problem today, in the world in general, and in the Russian Federation, is the increase in the number of minors with deviant behavior, especially juvenile offenders. An important place in the education system, the education and recreation of children through the work of the children's sports organizations is the entertainment activity that is modern, comprehensive and innovative vector in this area. According to the author, the problems of the organization of the entertainment activities of sports organizations in the system of prevention of deviant and delinquent behavior of children can be solved by constructing and establishing a model of the organization of animation activities in children's sports organizations as part of the system of prevention of deviant and delinquent behavior of children and ways of their solution on the example of the Russian Federation.