The suprascapular nerve entrapment syndrome is a rare neuropathy. Clein described the frist case report of this syndrome and operative procedure in 1975. The cardinal sign is pain in and around the shoulder, weakness of abduction and external rotation and atrophy of the supraspinatus and infraspinatus muscles, This syndrome can be diagnosed by clinical symptoms, physical examination, special roentgenogram and electromyogram. We experienced a case of the suprascapular nerve entrapment syndrome. We treated it by resection of the superior transverse ligament of suapula, and obtained good result.