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慢性咳嗽可以发生于各个年龄段儿童，发病率及就诊率逐年增高，明确病因是慢性咳嗽治疗的关键。目前，国内外对于慢性咳嗽的病因分析并没有简便、易于操作的统一标准，是临床上研究的热点问题。随着诊疗技术的发展，肺功能及呼出气一氧化氮测定在慢性咳嗽诊断中的作用逐渐引起关注。该文就肺功能联合呼出气一氧化氮测定在儿童慢性咳嗽病因分析中的应用价值进行综述，为临床儿童慢性咳嗽的病因分析提供参考。“,”Chronic cough can occur in children of all ages, and the incidence rate and consultation rate increase each year.Clarifying the cause of chronic cough is the key to treatment.At present, there are no convenient, operable and unified standards for etiological analysis of chronic cough in the world.Therefore, the etiological analysis of chronic cough has always been a hot topic in clinical research.With the development of diagnosis and treatment technology, the role of pulmonary function and exhaled nitric oxide in the diagnosis of chronic cough has attracted attention.This article reviews the application value of pulmonary function combined with exhaled nitric oxide in etiology analysis of chronic cough in children, to provide reference for etiology analysis of chronic cough in children.