本文通过对１２例臂丛神经炎患者的病史回顾和１年以上的观察随访，阐明其临床特点：患者由一肩部剧痛发作，无损伤史，疼痛通常自行缓解，以后常有三角肌，冈上、下肌，前锯肌，肱二、三头肌的肌力减退，肌电图扫描显示纤颤电位和正波对诊断有很大价值，其临床病程多变但很少复发 In this paper, 12 cases of brachial plexus patients history review and more than 1 year follow-up, to clarify its clinical features: patients with a shoulder pain onset, no history of injury, the pain is usually self-remission, often after the deltoid, Supraspinatus, inferior serratus, anterior serratus, brachial and triceps muscle weakness, EMG scan shows that fibrillation potential and positive waves of great value in the diagnosis of its variable clinical course but rarely relapse