Four patients with postpneumonectomy empyema were treated successfully by modification of Clagett`procedure. Their primary diseases were chronic bronchiectasis, empyema with bronchopleural fisula, pulmonary tuberculosis, and pyohemothorax. The time interval between 1st and 2nd operation was 26.5 months in average. The pleural space was irrigated with various kinds of antiseptic solutions for 23.3 days in average and debrided, filled with antibiotic saline solution. After the procedure, patients had no recurrences of empyema and discharged from hospital after brief days. [averages: 15.5 days][KTCS 1975;1:9-12]