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呼吸道炎症在肺部疾病中扮演着重要角色，其检测方法主要依据采样方法的不同分为无创和有创技术。不同呼吸系统疾病所表现出的呼吸道炎症也不尽相同，痰则是气管－支气管黏膜炎症反应下分泌出的浓稠黏液，因此痰诱导作为一种简便、无创、经济、可靠的检测手段日益受到关注。随着科技的发展此检查方法也在随之改进，关于痰诱导方法的探讨在于对几种常用痰诱导方法进行可行性、安全性、可靠性等对比，以便更好地用于临床工作。“,”Airway inflammation plays an important role in lung diseases,and its detection methods based on different sampling method are divided into non-invasive and invasive techniques.Different respiratory diseases exhibit different airway inflammation, and sputum is the trachea-bronchi secreted thick mucus under submucosal inflammation,therefore sputum induction as a simple,non-invasive,eco-nomical and reliable means of detection has been attracted growing attention,and with the development of science and technology,the test method is also improved.Here is to discuss the sputum induction method from the perspectives of the feasibility,safety,reliability of several common sputum induction methods,in order to better apply them in the clinical work.