对１３７例接尘工人及３７例健康对照行定量负荷肺功能测定，结果示接尘组各期换气功能及吸氧能力较对照组明显降低；接尘组内随期别增加，肺换气功能及吸氧能力逐渐减退。用多元逐步回归分析示：体重、年龄、工龄是影响运动肺功能的主要指标。提示运动肺功能可客观地评价矽肺病患者劳动能力丧失的程度。 137 cases of dust-exposed workers and 37 healthy controls were performed quantitative load lung function test, the results showed that dust exposure group ventilation function and oxygen absorption capacity was significantly lower than the control group; with the dust group increased with the seizure, pulmonary ventilation Function and oxygen abatement gradually diminished. Multiple stepwise regression analysis showed that body weight, age, and length of service were the main indicators of pulmonary function. Tip exercise lung function can objectively evaluate the extent of labor capacity loss in patients with silicosis.