the effect of basic karate exercises on the treatment and improvement of conduct disorder, aggression and anxiety in children. The research method was a quasi-experimental design with a pre-test-post-test design with a control group. The statistical population of the present study was children referred to three karate clubs in Tehran in 1403. The statistical sample size was 40 children with one of the mental and behavioral disorders who were selected through available and voluntary sampling. In order to collect data, the questionnaire for behavioral problems in children and adolescents (Kwai and Peterson, 1987) was used. The experimental group underwent a 12-week training program, two 60-minute sessions per week, basic karate exercises, and the control group did not receive any training. In order to analyze the data, the analysis of variance with repeated measures test method was used.The findings showed that there was a significant difference at the 0.001 level between the pre-test and post-test for conduct disorder, aggression, and anxiety. By comparing the mean scores in the three stages, it is observed that the mean scores of the components of psychological disorders (anxiety, conduct disorder, and aggression) in the post-test and follow-up stages have decreased significantly compared to the pre-test stage. The difference between the follow-up stage and post-test scores was not significant (P≤0.05). The results of the present study have important benefits for the treatment and management of childhood behavioural and psychological disorders and indicate that karate training may serve as a non-pharmacological and complementary intervention alongside traditional interventions.