干扰素（interferonIFN）是细胞内能够阻止病毒复制的一组特殊蛋白质。一般分为3种类型，即IFN－α、IFN卡和IFN－γ。它在抗病毒、抗肿瘤及免疫调节等方面都有良好的作用。近年来，在IFN的基础研究和临床应用上有很大进展，现就其在国内儿科方面的应用简述如下。1呼吸道合胞病 Interferon (IFN) is a group of special proteins in the cell that stop the virus from replicating. Generally divided into three types, namely IFN-α, IFN card and IFN-γ. It has good effect in anti-virus, anti-tumor and immune regulation. In recent years, great progress has been made in the basic research and clinical application of IFN, and its application in the domestic pediatric field is briefly described as follows. 1 respiratory syncytial