ObjectiveTo analyze the clinic characteristics and the flexible bronchoscopic findings of 1 221 cases of endobronchial tuberculosis,and try to find out some useful clues for the diagnosis of endobronchial tuberculosis. MethodsThe clinic characteristics and the bronchoscopic findings of 1 221 cases of endobronchial tuberculosis were summarized and analyzed. ResultsIn the 1 221 cases of bronchial tuberculosis,there were 491 males and 730 females with mean age of 45.5±16.8 years(ranged between 6 and 84 years). The peak incidence of endobronchial tuberculosis in females was between 20 and 50 years old,and in males was between 45 and 70 years old. The lesions were more common in the right lung (757 cases,62.00%). The most susceptible segment involved was the right upper lobe(316 cases,25.88%). The cases of left main bronchus tuberculosis (270 cases,22.11%) were more than right main bronchus tuberculosis(247 cases,20.23%). The most common bronchoscopic appearances were oedematous-hyperaemic and necrosis. The typical changes include caseous necrosis(117 cases,14.50%),fibrostenotic(130 cases,10.65%),and granuloma(92 cases,7.53%),which often occurred in the left main bronchus. The most common endoscopic classification of endobronchial tuberculosis was type Ⅱ(531 cases,43.49%)and type Ⅲ(505 cases,41.36%). ConclusionsBronchial tuberculosis occures in females more of ten than males. Female patients were mainly under the age of 50 years,while male patients was mainly above the age of 45 years. The most susceptible segments are the right upper lobe and the left main bronchus. The most common endoscopic classification is necrotizing ulcerative and granulation proliferative.