Acute myocardial infarction is a life-threatening condition that requires urgent medical intervention. It is difficult to heal on its own because of embolism, stenosis and necrosis of the blood supplying myocardium in the coronary arteries. The extent of myocardial necrosis determines the prognosis of myocardial infarction. If the area is large, it is difficult for the patient’s heart to achieve normal work and contraction, and it is unable to generate effective perfusion pressure and face death. It is recommended to go to the hospital for the best treatment in time to improve myocardial blood supply, save the dying or incomplete necrotic myocardium, improve the compensatory function of the heart, and protect the patient’s quality of life in the later stage.