目的：探讨尿激酶对凝固性血胸的治疗作用，减少再次手术的发生率。方法：１９９３ ～１９９８ 年作者共收治凝固性血胸１８ 例，均采用胸腔穿刺血凝块内注射尿激酶，胸腔闭式引流进行治疗。结果：１６ 例病人痊愈，２ 例残留少量血凝块，半年后完全吸收。结论：胸腔血凝块内注射尿激酶治疗凝固性血胸，方法简单、病人痛苦小，值得推广。 Objective: To investigate the therapeutic effect of urokinase on coagulation hemopneumothorax and to reduce the incidence of reoperation. Methods: From 1993 to 1998, the authors treated 18 cases of coagulation hemothorax, all of them were treated by intrapleural injection of urokinase in thrombus and thoracic closed drainage. Results: 16 patients were cured, 2 cases left a small amount of blood clots, completely absorbed after six months. Conclusion: Thoracic blood clot injection of urokinase coagulation hemothorax, simple method, the patient suffering is small, it is worth promoting.