中文摘要：

咽鼓管功能不良是一系列咽鼓管功能不良症状和体征的综合症。从严格意义上讲，咽鼓管功能不良就是咽鼓管功能失效。本文对其病因、临床表现、诊断和治疗等方面进行综述。

英文摘要：

Dysfunctional eustachian tube leads to a variety of symptoms and signs of eustachian tube dysfunction （ETD） syndrome. Strictly speaking, ETD represents failure of the eustachian tube. This article aims to review the etiology, clinical manifestation, diagnosis and therapies of ETD.