Objective:To observe influence of Tiaomaiyin drug and its separate components on three kinds of experimental arrhythmia in animals.Method:The animals were randomly divided into a model group

a group treated by whole Tiaomaiyin

a group treated by main components for Liangxue Qingre function

a group treated by assisted components for Yiqi Yangxin function

a group treated by assisted components for Xingqi Tongmai function and a group treated by a known effective drug（Propafenone）.By recording ECG

the effects of Tiaomaiyin and its separate components on ventricular arrhythmia induced by Aconitine in rats

that induced by Ouabain in guinea pigs

and that induced by ligating coronary artery were observed.Result: The whole Tiaomaiyin drug and the components for liangxueqingre function inhibited all the three kinds of ventricular arrhythmia in the three kinds of animals

respectively.Conclusion: The whole Tiaomaiyin drug and the components for Liangxue Qingre action provide the function against experimental arrhythmias.