The spine is a column of our body and dissymmetry of the spine can cause problems on our health. In this study, the origin of idiopathic spine dissymmetry among adolescents is explained that physical force does not flow fully so that chilly draft comes into being. The main purpose of this study is to analyze the effect of the spine dissymmetry improvement program. Xray examination on the thoracic vertebrae and the lumbar vertebrae was applied before and after 12-week Dahn Taekwondo program to each participant. In this study, we apply the Dahn-Taekwondo Spinal Asymmetry Improvement Program to 18(9-18 year old) adolescents with spinal asymmetry 3 times per week and 1 hour per 1 day for 12 weeks. The results are as follows. First, the Dahn-Taekwondo spinal asymmetry improvement program brings significant reduction(p <.001) of the Cobb s angle of thoracic asymmetry in adolescents. Second, in the Taekwondo lumbar asymmetry improvement program, the lumbar asymmetry Cobb s angle of adolescents decreased significantly(p <.001). These findings indicate that the Dahn Taekwondo spine improvement program is effective for the juveniles with spine dissymmetry and can be recommended to prevent and treat spine dissymmetry among juveniles. Therefore, Dahn-Taekwondo spinal asymmetry improvement program can be used as a body correcting exercise for young people who do little physical activity and especially sit long time with unstable postures.