理肺定喘冲剂是由蜜麻黄、黄芪、杏仁、蜜杷叶、蜜紫苑、半夏、桑皮、甘草等中药组成,具有清肺化痰、止咳平喘之功,临床用于治疗支气管哮喘,疗效显著。本文对其主要药效学进行研究。1　材料1.1　药品与试剂　理肺定喘冲剂由黑龙江中医药大学第一附属医院制剂室制备,每包重10ｇ, Lifei Dingchuan Granule is composed of honey ephedra, astragalus, almonds, candied leaves, honey aster, Pinellia, mulberry, licorice and other traditional Chinese medicines. It has the functions of clearing the lungs, removing phlegm, relieving cough, and relieving asthma. It is used clinically to treat bronchial asthma. ,Significant effect. This article studies its main pharmacodynamics. 1 Materials 1.1 Drugs and Reagents Lifei Dingchuan Granules are prepared by the preparation room of the First Affiliated Hospital of Heilongjiang University of Traditional Chinese Medicine. Each package weighs 10g.