Object : The purpose of this study is to report the improvement of Tempormandibular Disorder patients who were treated by M.S.T(Motion Style Treatment). Methods : The clinical study was done on 3 cases of patients with tempormandibular disorder we checked the diameter between the maxilla and mandible with jaws fully opened, and also checked NRS score after the treatment of M.S.T(Motion Style Treatment) each day. Results & Conclusion : The diameter of the open mouth increased after the treatment of M.S.T(Motion Style Treatment), whereas NRS score decreased after the treatment of M.S.T(Motion Style Treatment). It is concluded that the M.S.T might be effective to the patient with tempormandibular disorder.