Methods: Histamine was used to induce tracheaspasm in whole body and Guinea pig s isolated trachea test was used to observe the antiasthmatic action of XiaoerKechuan granule.

• 方法:采用豚鼠整体引喘法及豚鼠离体气管法观察小儿咳喘冲剂的平喘作用;用电刺激猫喉上神经引咳法及氨水刺激小鼠引咳法观察该药的镇咳作用;