药物性所致的免疫性血小板减少症发病率较低。头孢氨苄致免疫性血小板减少症国内报告甚少。我院近年收治1例服用头孢氨苄而致血小板减少引起扁桃体术后大出血。现报告如下: 患者女性,54岁。因慢性扁桃体炎1987年2月16日在我院门诊行电挤切术。过程顺利。术前血常规血小板计数及出血凝血时间均正常。术后在家自服头孢氨苄每次0.5g每日3次,共用12天,以预防创面感染。术后第十三天,晚上突然刀口处流血不止 Drug-induced immune thrombocytopenia incidence is low. Cephalosporin induced immune thrombocytopenia rarely reported in the country. In recent years, our hospital admitted to a case of taking cephalexin caused by thrombocytopenia caused tonsil bleeding. Report is as follows now: Patient female, 54 years old. Due to chronic tonsillitis February 16, 1987 in our hospital outpatient line squeezectomy. The process is smooth. Preoperative blood platelet count and bleeding coagulation time are normal. Postoperative self-serving cephalexin 0.5g 3 times a day for 12 days to prevent wound infection. The thirteenth day after surgery, sudden bleeding at the knife edge at night