】通过对１０名男性运动员血气指标（血红蛋白、氧饱和度、氧分压、二氧化碳分压和总量、ｐＨ值、碳酸氢根离子含量、标准碳酸氢盐含量）在２４小时６个不同时刻的量变的研究，以探讨运动喘安静状态下的血气指标的时间生物学特征，为运动医务监督和运动训练提供实验依据。结果表明：血红蛋白、二氧化碳总量、碳酸氢根离子、标准碳酸氢盐和ｐＨ值均表现出明显的近似昼夜节律（Ｐ＜０．０５）；而氧饱和度、氧分压和二氧化碳分压未表现出昼夜节律（Ｐ＞０．０５）。 】 By analyzing blood gas indexes (hemoglobin, oxygen saturation, partial pressure of oxygen, partial pressure of carbon dioxide and total amount, pH value, bicarbonate ion content and standard bicarbonate content) of 10 male athletes at 6 different times Quantitative changes in the study to explore the time-biological characteristics of blood gas in the quiet state of exercise asthma, provide experimental evidence for the exercise medical supervision and sports training. The results showed that: the hemoglobin, total amount of carbon dioxide, bicarbonate ion, standard bicarbonate and pH showed a significant approximate circadian rhythm (P <0.05); and oxygen saturation, partial pressure of oxygen and partial pressure of carbon dioxide Showed circadian rhythm (P> 0.05).