近10年来，我们对48例以顽固性咳嗽为主要或唯一症状，胸部X线检查无异常，常用的抗生素和止咳剂治疗无效的患者进行了纤维支气管镜（纤支镜）检查，现报告如下。对象：48例患者中男16例，女32例，年龄ZI～59岁。皆无慢性心肺疾患史，亦无职业性粉尘接触史，均为木吸烟或戒烟2 In the past 10 years, we have performed bronchoscopy (bronchoscopy) on 48 patients with refractory cough as the main or only symptom, no abnormal chest X-ray and commonly used antibiotics and antitussives. The report is as follows . PARTICIPANTS: Among 48 patients, 16 were males and 32 were females, ranging in age from ZI to 59 years. No history of chronic heart and lung disease, no history of occupational dust exposure, are wood smoking or smoking cessation 2