心动过缓是临床常见的心律失常疾病 ,目前治疗药物仅有阿托品和异丙肾上腺素两类药物 ,但不良反应较多。心得快 ( xindekuai,XDK)是由人参、黄芪、虫草、附子等中药组成的复方制剂 ,临床研究表明 XDK对心动过缓有一定的治疗作用 ,因此 ,本文对其抗心动过缓及作用机制进行了实验 Bradycardia is a common clinical arrhythmia disease, the current treatment of drugs only atropine and isoproterenol two drugs, but more adverse reactions. Xandekuai (XDK) is a complex preparation made up of traditional Chinese medicines such as ginseng, astragalus, Chinese caterpillar fungus and Chinese aconite. Clinical studies have shown that XDK has a certain therapeutic effect on bradycardia. Therefore, this paper reviews its anti-bradycardia and its mechanism of action Experiment