变应性鼻炎 (allergicrhinits ,AR)与支气管哮喘二者常同时存在 ,前者先于后者发生 ,是哮喘的一个危险因素 ,故提出“一个呼吸道 ,一种疾病”的新概念。鼻病毒的感染、鼻 支气管反射、上呼吸道机能的改变均是AR对哮喘影响的因素 ;治疗AR会改善肺功能 ,降低气道高反应性 ,减轻哮喘。本文简述AR与哮喘间的密切联系 ,以期拓宽临床医生对二者间相互联系的认识 ,用理论指导实践 Allergic rhinitis (AR) and bronchial asthma often coexist. The former takes precedence over the latter and is a risk factor for asthma. Therefore, a new concept called “a respiratory tract, a disease” is proposed. Rhinovirus infection, nasal bronchial reflexes, changes in upper respiratory tract function are all factors that affect the effects of AR on asthma; treatment of AR improves lung function, reduces airway hyperresponsiveness, and reduces asthma. This article briefly describes the close relationship between AR and asthma, with a view to broaden the clinician’s understanding of the interconnection between the two, using theory to guide practice