本文对175例住院病儿反复呼吸道感染的发病原因进行调查分析,本组资料说明,气温低、空气干燥、家庭中使用煤作燃料、以牛乳、混合喂养、合并有佝偻病、贫血及先心病、反复使用激素和喘息性的下呼吸道感染等因素易诱发反复呼吸道感染,对如何消除这些因素预防呼吸道感染提出了具体方法和措施。 In this paper, 175 cases of hospitalized children recurrent respiratory tract infection caused by the investigation and analysis of the data shows that this group, the temperature is low, air-dried, the family use of coal as fuel to milk, mixed feeding, with rickets, anemia and congenital heart disease, Repeated use of hormones and wheezy lower respiratory tract infections and other factors easily lead to recurrent respiratory tract infections, how to eliminate these factors to prevent respiratory infections have put forward specific methods and measures.