目的　探讨结核性胸膜炎病人的胸腔排液前后的肺功能变化。方法　使用肺功能检测仪 ,对 112名结核性胸腔积液患者进行抽液前后的肺功能检测 ,并追踪至胸腔积液消失或微量抽不出胸液为止。结果　胸腔积液对呼吸功能有非常明显的影响 ,病程的长短对肺功能以及肺功能的恢复也有影响 ,超过一个月的患者遗留肺功能障碍者多 ,且程度较重。年龄的因素也对肺功能的恢复有影响 ,超过 6 0岁的患者抽液前后对肺功能有所恢复 ,但变化不大 ,且中重度肺功障碍者多。结论　积极的胸腔抽液治疗对肺功能的恢复有积极的意义 ,及时尽早的抽液可使部分病人的肺功能得到恢复或减轻肺功能的损害 Objective To investigate the changes of pulmonary function before and after pleural effusion in patients with tuberculous pleurisy. Methods Pulmonary function detector was used to detect the pulmonary function of 112 patients with tuberculous pleural effusion before and after pumping fluid, and to track the disappearance of pleural effusion or trace of pleural effusion. Results pleural effusion on respiratory function has a very significant impact on the duration of the lung function and lung function recovery also affected more than one month of patients left with more pulmonary dysfunction and to a greater extent. Age factors also affect the recovery of lung function, over 60 years of patients before and after fluid recovery of lung function, but little change, and more severe pulmonary function disorders. Conclusion Positive pleural fluid extraction has a positive effect on the recovery of lung function. The prompt pumping of fluid in time can restore the lung function of some patients or reduce the damage of lung function