目的 观察天一止咳糖浆的祛痰、平喘作用。方法 采用小鼠酚红法和大鼠毛细管法祛痰试验、喷雾致喘法和气管螺旋条法平喘试验，观察天一止咳糖浆不同剂量组相应作用。结果 天一止咳糖浆能明显增加小鼠的酚红排出量和大鼠的排痰量，增加豚鼠的哮喘潜伏期和显著扩张支气管平滑肌。结论 天一止咳糖浆具有显著的祛痰、平喘作用。

Object To observe the effect of Tianyizhike Syrup on dispelling phlegm and relieving asthma. Methods The phenol red secreting tests in mice, capillary method in rats, asthma induced by spraying and trachea screwy strip method on guinea pig were adopted for observing the related pharmacological effect in different doses of Tianyizhike Syrup. Results Tianyizhike Syrup could obviously increase the amount of the mice secreting phenol red and the rat dispelling phlegm, prolong the latent period of the guinea pig asthma and significantly enlarge the bronchia smooth muscle. Conclusion Tianyizhike Syrup has a significant effect of dispelling phlegm and relieving asthma.