Modern pharmacological studies have also confirmed that Qi-Yin Enrichment can strengthen the heart contractility. It improves the blood supply of myocardium, protects ischemic and hypoxic myocardial cells and plays a role of anti-acute myocardial infarction. It can also excite the central nervous system and adjust the heart rate. Therefore, this formulation can be used to treat arrhythmia, chronic heart failure and diabetes.