The author reviewed 50 cases of positive sputum AFB patients following pulmonary resection of pulmonary tuberculosis [total 617 cases] operated on at the National Kongju Hospital during 6 years period, from January, 1985 to December, 1990. 1. There were 36 male and 14 female patients ranging from 20 to 50 years old[mean age, 33.8 years] 2. An average duration of pulmonary tuberculosis history was 7.5 years. 35 cases[76%] had many drug resistance of tuberculosis [above 5 drugs]. 3. The majority indication for pulmonary resection were persistent positive sputum AFB with cavity or destroyed lung or hemoptysis. 23 cases[46%] underwent pneumonectoy and 13 cases[23%] lobectomy. The postoperative complications occured in 19 cases [38%]. 4. 34 cases[68%] occured sputum AFB positive following operation unitil 6 months, and 6 cases[12%] occured 2 years later 5. 21 cases[42%] got conversion to negative sputum, and then 29 cases[58%] remained persistent positive sputum.