Abstract: Objective To assess the efficacy of fibrobronchoscopy in diagnosis of simple endobronchial tuberculosis.Method Biopsy, brush biopsy and bronchoalvelar lavage fluid examination were performed in 92 patients with simple endobronchial tuberculosis using an electronic fibrobronchoscope.Results Simple endobronchial tuberculosis commonly occurred in young people (25-35 years of age), often developed in the superior lobe apicoposterior segment, middle lobe (ligule) and superior branch of the inferior lobe of the left lung. Under fibrobronchoscope, congested edema, caseous necrosis and ulcer granulation were observed in patients with simple endobronchial tuberculosis. The successful detection rates for biopsy, brush biopsy and bronchoalvelar lavage liquid examination were 81.5%, 30.4% and 20.7%, respectively.Conclusion Fiberobronchoscopy is effective for diagnosis of simple endobronchial tuberculosis.