OBJECTIVE:To analyze the status quo of the current application of expectorants so as to provide references for rational use of drugs in the clinic.

• 目的:对现阶段常用祛痰药的应用现状进行分析,以期为临床合理应用提供参考。方法:收集国内外相关文献,从痰液产生机理、祛痰药的作用机理及应用原则等方面进行评价。