外感咳嗽是临床常见病、多发病．在我国，因其就诊的患儿占儿科门诊的50％以上，因此小儿外感咳嗽的防治工作早已引起儿科医务工作者的重视．目前，各级医学杂志关于运用中药治疗小儿肺系疾病的报道很多，治疗外感咳嗽的中成药也不少，但临床疗效却不尽人意。我们分析其原因， Exogenous cough is a common clinical disease, frequently-occurring disease. In our country, because of its treatment of children accounted for more than 50% of pediatric outpatient, so prevention and treatment of pediatric exogenous cough has drawn the attention of pediatric medical workers. At present, there are many reports on the use of traditional Chinese medicine in the treatment of pediatric pulmonary diseases at all levels of medical magazines. There are also many proprietary Chinese medicines used to treat exogenous coughs, but the clinical efficacy is unsatisfactory. We analyze the reason,