Ⅰ型速发型变态反应病是有害的免疫反应之一。这种病指某个人受抗原或半抗原刺激后产生IgE而诱发的疾病,临床上表现为外源性哮喘及花草、药物、食物、昆虫叮螫引起的急、慢性荨麻疹等。目前对该病缺乏根治疗法。1975～1984年九年来,我们逐渐开展用口服活卡介苗防治重度Ⅰ型速发型变态反应过敏病人,取得了较满意的效果。现将防治方法及实验结果介绍如下,供推广使用和深入研究的参考。防治方法和病人选择条件 Type I rapid hair allergy is one of the harmful immune responses. This disease refers to a person caused by the antigen or hapten-induced IgE induced disease, clinically manifested as exogenous asthma and flowers, medicines, food, insect excretion caused by acute and chronic urticaria. The current lack of cure for the disease. Nine years from 1975 to 1984, we gradually carried out oral live BCG prevention and treatment of severe type Ⅰ hair allergic hypersensitivity patients, and achieved satisfactory results. Now the prevention methods and experimental results are introduced below, for the promotion of the use and in-depth study of the reference. Prevention and treatment of patients and selection conditions