Abstract: Object: To investigate the effects of Tai Chi exercise on attention deficit hyperactivity disorder (ADHD) in children, so as to provide evidence for treatment of ADHD by Tai Chi exercise. Methods: Using Connors Diagnostic Scale to screen school-age children whose hyperactivity index was over 1.5, and the chosen children were randomly assigned to the Tai Chi group (n=18, male=10, female=8) and the control group (n=18, male=9, female=9). There was no significant difference in age, height, and weight between the two groups.Before and after the Tai Chi intervention, all the subjects were surveyed with Child Behavior Checklist, Child Sensory Integration Checklist and Child Adaptive Behavior Scale. Results: (1) In Child Behavior Checklist test, the scores of social withdrawal, hyperactivity and communication deficit in the Tai Chi group decreased significantly (P<0.05). (2) In Child Sensory Integration Checklist test, the scores of vestibular function and proprioception in the Tai Chi group increased significantly (P<0.05). (3) In Child Adaptive Behavior Scale test, the scores of independence factor and cognition factor in the Tai Chi group increased significantly (P<0.01). Conclusion: Regular Tai Chi exercise can decrease the symptoms of ADHD in children. Tai Chi exercise can be adopted as an effective therapy for children's ADHD.

Key words: Children, Tai Chi, ADHD, Exercise Therapy