呼吸道异物是临床常见急症 ,尤多见于小儿 ,误诊率较高。自 1986年以来 ,我院共误诊 31例 ,现分析如下。临床资料 :本组 31例中 ,男 14例、女 17例 ;年龄最小 8个月 ,最大 5 0岁 ,3岁以下者 2 0例。术前 X线检查 2 2例发现有不同程度的肺阻塞征象和纵隔摆动 ,其中阻塞性肺气肿 Respiratory foreign body is a common clinical emergency, especially seen in children, a higher rate of misdiagnosis. Since 1986, a total of 31 cases of misdiagnosis in our hospital, are analyzed as follows. Clinical data: The group of 31 cases, 14 males and 17 females; the youngest 8 months, the largest 50 years of age, under the age of 20 cases. Preoperative X-ray examination of 22 cases found to varying degrees of lung obstruction signs and mediastinal swing, in which obstructive pulmonary emphysema