EDN1 and myocardial ischemia: Chinese herbs for promoting blood circulation and removing blood stasis could improve the symptoms of chest tightness and pain, and increase the secretion of NO in serum, by reducing the release of ET-1 and hs-CRP in serum, myocardial ischemia can be alleviated so as to reduce cardiovascular events and continuously improve patients’ quality of life, thus making traditional Chinese medicine get a broader development space.