Following the popularization of the application of broncho-scopy, the necessity for pathological investigations on tracheo and broncho-tuberculosis has increased. Especially, those considerations on the distribution of tubercle bacilli in the tissue of the ulcerous lesions formed on the trachea and bronchus are of the utmost importance. In the first report of the present study, the pathology of trachea and main bronchus was discussed, and in the second report, the pathology of lobular and segmental bronchus and the distribution of tubercle bacilli in the ulcerative lesions formed on the trachea and main bronchus were discussed.