Studying on ECG in conscious rabbits, on the blood transfusion qantity of coronary artery in the isolated heart of guinea pigs, on the cardiac arrhythmia in anaesthetic rats, the results show that a dosaege of 10% and 30% Polygala au- reocauda Dunn(PAD) can ameliorate the acute myocardial ischemia of rabbits caused by Hypophysine and improve the blood transfusion quantity of coronary artery in the isolated heart of guinea pigs, and that a dosage of 60% and 90% PAD can change the cardiac arrhythmia of rats, caused by BaCl_2, back to nor...