目的　探讨心跳骤停后心肺复苏术（ＣＰＲ） 的最佳顺序。方法　检测了两组共１２ 例不同心肺复苏术患儿１ 小时内的血气结果。一组仅单纯心脏挤压，另一组心脏挤压同时伴有机械通气。结果　在心跳骤停后的最初３０ｍｉｎ ，两组动脉血氧分压、动脉血氧饱和度下降及动脉血二氧化碳分压升高无实际临床意义。结论　人工通气可以延搁，ＣＡＢ顺序复苏术比ＡＢＣ顺序复苏术更为合理实用。 Objective To investigate the optimal order of cardiopulmonary resuscitation (CPR) after cardiac arrest. Methods The blood gas results of 12 patients with different cardiopulmonary resuscitation (CPR) within one hour in two groups were detected. One group only a simple heart squeeze, the other group of heart squeeze accompanied by mechanical ventilation. Results During the first 30 minutes after cardiac arrest, there was no practical clinical significance of arterial partial pressure of oxygen, arterial oxygen saturation and arterial partial pressure of carbon dioxide in both groups. Conclusion artificial ventilation can be delayed, CAB sequential resuscitation than ABC sequential resuscitation is more reasonable and practical.