Objectives : The purpose of this study is to report the improvement of acupotomy in patients with partial tear of supraspinatus tendon. Methods : We treated 4 patients having shoulder pain due to partial tear of supraspinatus tendon with acupotomy combined with oriental medical treatments. We checked visual analog scale(VAS) and range of movement(ROM). Results : There are remarkable improvement in VAS and ROM. Conclusions : This report shows acupotomy has a effectiveness on partial tear of supraspinatus tendon. Follow-up study is needed.