目的　探讨预测肺切除术后肺功能与术后心肺并发症发生的关系。　方法　对 30例行肺切除术的患者分别采用 3种不同的公式预测肺切除术后肺功能 ,分析预测术后肺功能指标与术后心肺并发症之间的关系。　结果　预测第 1秒用力呼出量 (ppo FEV1 )≤ 0 .8L、预测一秒率 (ppo FEV1 % )≤ 6 0 %、预测一氧化碳弥散占预计值的百分比(ppo DL CO% )≤ 5 0 %的患者术后并发症发生明显增加。 Markos和 Ali公式对术后肺功能的预测优于 Juhl公式。结论　术前可通过预测术后肺功能于肺切除术前筛选术后发生并发症的高危患者 ,以正确估计手术风险、减少术后并发症的发生 Objective To investigate the relationship between the prediction of pulmonary function after pulmonary resection and the occurrence of postoperative cardiopulmonary complications. Methods Thirty patients undergoing pneumonectomy were used to predict the lung function after lung resection by three different formulas respectively. The relationship between postoperative pulmonary function and postoperative cardiopulmonary complications was analyzed. RESULTS Predictors of ppo FEV1 ≤0.8L, predicted pps FEV1% ≤60%, predicted% of predicted carbon monoxide dispersion (ppo DL CO%) ≤50% Patients with postoperative complications increased significantly. The prediction of postoperative lung function by Markos and Ali formulas is superior to Juhl’s formula. Conclusion High-risk patients with postoperative complications can be screened preoperatively by predicting postoperative pulmonary function before surgery to correctly estimate the surgical risk and reduce the incidence of postoperative complications