本文分析了34例小儿重症肺炎的血气和酸碱度。根据血气分析指标诊断为呼吸衰竭者共19例,而凭临床诊断为呼吸衰竭者仅13例,漏诊6例,占31.6％。本组病例的酸硷紊乱,混合性酸中毒少于代谢性硷中毒。并对代谢性硷中毒在重症肺炎病程中发生的病因和危害性略加讨论。 This article analyzes the blood and pH of 34 cases of pediatric severe pneumonia. A total of 19 cases were diagnosed as respiratory failure according to the blood gas analysis index. Only 13 cases were diagnosed as respiratory failure by clinical diagnosis, and 6 cases were missed, accounting for 31.6%. This group of patients with acid-base disorders, mixed acidosis less than metabolic alkalosis. And metabolic alkalosis in the course of severe pneumonia in the etiology and the dangers of a slight discussion.