ObjectiveTo highlight the characteristics of bronchial foreign body in Adults. MethodsThe clinical data of three patients with bronchial foreign body were analyzed and related literatures were reviewed. ResultsForeign bodies in three patients were all located in right bronchi. Their initial diagnoses were tumor, pneumonia and foreign body, respectively. They all didn't offer a definite history of foreign body aspiration. Foreign bodies in three patients were diagnosed and treated by bronchoscopy. Through reviewing 978 related literatures, we found 2920 cases of bronchial foreign body in adults. 75.00% of them didn't offer a history of foreign body aspiration. 80.13% of them were misdiagnosed as other diseases before bronchoscopy, such as pneumonia(31.23%), lung cancer(25.21%), tuberculosis(5.81%), bronchiectasis(6.58%) and asthma(12.47%). Some of them were misdiagnosed for over 30 years. ConclusionsBronchial foreign bodies in adults are easily misdiagnosed. Bronchoscopy plays an important role in diagnosis and treatment of bronchial foreign body.