Abstract: Objective To study analysis of efficacy evaluation of B-ultrasound on the patients with tuberculous pleurisy pleural treated by injection of urokinase.  Methods 113 cases of patients with tuberculous pleurisy pleural were collected from January to June of 2009. in 20 of whom the Results of Ultrasonography was analyzed after and before the treatment by injection of urokinase. Results There are three types of B-mode ultrasonic images in tuberculous pleural effusion: type Ⅰ is 49(43.4%),type Ⅱ 51(45.1%) and type Ⅲ 13(11.5%). No injected urokinase into pleural cavity: the incidence rate ofpleural thickening was 12.2% in type Ⅰ, 69.4% in typeⅡand 100% in type Ⅲ. There were significant differences among them（P<0.005）. Injected urokinase into pleural cavity：the rate of pleural thickening was 33.3% in type Ⅱand 69.4% inno injected urokinase, showing that a significant difference was found between them（P<0.05）. The incidence rates ofpleural thickening were 100% in type Ⅲ both after injected urokinase and no injected urokinase.  Conclusions There ar e evaluation of therapeutic effect after injected urokinase.

Key words: Ultrasonography, predict, tuberculous pleuritis, urokinase