维生素A作为一种最早被认识并应用于临床的维生素 ,有维持上皮完整性、提高机体免疫力及抗感染的作用 ,被称为“抗感染维生素”而用于防治小儿呼吸道感染性疾病。但是它的缺乏与感染之间的关系及其抗感染的机制尚没有统一的结论。该文就维生素A与呼吸道感染性疾病的相关性及其在呼吸道感染性疾病中的应用综述如下。 Vitamin A is one of the earliest known and applied clinical vitamins, which has the function of maintaining epithelial integrity, enhancing immunity and anti-infection of the body and is called “anti-infective vitamin” for preventing and treating pediatric respiratory infectious diseases. However, its lack of relationship with infection and its mechanism of anti-infective have not reached a unified conclusion. The article reviews the association between vitamin A and respiratory tract infectious diseases and its use in respiratory infectious diseases.