目的 :比较肺容量对氦氧混合气体和对高原环境的反应 ,探讨呼吸氦氧混合气体后肺活量 ,尤其是补呼气容积大幅增高的现象 ;方法 :测定呼吸氦氧混合气体前后的肺活量、初呼气容积和深吸气量 ,并比较它们的变化 ;结果 :呼吸氦氧混合气体后肺活量、补呼气容积较呼吸空气时有明显的增加 ,且两者相比有显著性差异 (P <0 .0 5 ) ,深吸气量呈减少变化 ,但无显著差异 (P >0 .0 5 ) ,其中肺活量平均增加 1 9.2 % ,补呼气容积平均增加87.3 % ,深吸气量平均减少 7.3 9% ;结论 :呼吸氦氧混合气体可令肺活量及初呼气容积大幅增高现象可能是肺功能研究方面一个新的重要发现 ,据推测这可能是氦参与了一些未知的生物学反应的结果 ;另一方面 ,这一现象表明 ,我们对肺弹性的认识尚不充分 ,有待创新性的研究 OBJECTIVE: To compare the response of lung volume to helium-oxygen mixed gas and altitude environment, and to explore the post-respiratory Helioxene lung volume, especially the volume of fill-up air volume increased significantly.Methods: The vital capacity before and after breathing Helium-Oxygen mixed gas Expiratory volume and deep inspiratory volume, and compare their changes; Results: After breathing Helic-Oxygen mixed gas volume of lung volume, fill lung volume increased significantly when compared with breathing air, and there was a significant difference between the two (P < 0.05). The inspiratory volume showed a decreasing change but no significant difference (P> 0.05). The average vital capacity increased by 9.22%, the inspiratory volume increased by 87.3% on average, and the inspiratory volume decreased on average 7.39% .Conclusion: The phenomenon that breathing Helium-Oxygen mixed gas can make the vital capacity and the initial expiratory volume significantly increase may be a new important finding in lung function research. It is presumed that this may be the result of helium participating in some unknown biological reactions ; On the other hand, this phenomenon shows that our understanding of pulmonary elasticity is not sufficient and pending innovative research