The article is devoted to the theoretical analysis of some behavioral and socio-psychological features of children with attention deficit hyperactivity disorder (ADHD), involved in a sport activity. It was found that adaptive potential of children with attention deficit hyperactivity disorder is studied well in a context of their social behavior at educational organizations and pedagogical influence on this behavior, but there is a lack of psychological research on personal features, motivation, socio-psychological adaptation, psychological comfort of children with attention deficit hyperactivity disorder, especially in a sport activity. There are some psychological problems of children with ADHD such as high aggression, difficulties in social relationships, etc. that could lead to problems in socio-psychological adaptation. In young athletes with ADHD, motor skills are developed less compared to their peers and consequently sports results are worse But a lot of researchers note the positive effect of different sport activities on correction of symptoms of ADHD, so it is important to maintain the interest in sport in children with ADHD. ADHD is determined by neurobiological, genetic, socio-psychological factors that require a comprehensive individual approach to the correction of the syndrome including not only physical exertion, but also psychological, pedagogical and in some cases medical methods of treatment and recovery.