对机械制造业７２例男性铸工尘肺患者和５３例对照者进行了肺功能测定．结果表明，尘肺患者肺功能各项指标（ＦＶＣ、ＦＥＶ_１、Ｖ_（５０）、Ｖ_（２５））的实测值占预计值的百分比均较对照组为低。对不吸烟尘肺患者分析表明：尘肺合并结核与否对肺功能影响不显著；肺功能改变与尘肺期别并不平行。 Pulmonary function tests were performed on 72 male cast-workers with pneumoconiosis and 53 controls on the machine manufacturing industry. The results showed that the percentage of the measured values ​​of pulmonary function parameters (FVC, FEV_1, V_ (50), V_ (25)) in the patients with pneumoconiosis was lower than the control group. Analysis of non-smoking pneumoconiosis patients showed that: pneumoconiosis with tuberculosis or not on pulmonary function was not significant; changes in lung function and pneumoconiosis are not parallel.