For patients with myocardial infarction, we emphasize early detection and hospital admission, as well as strengthening on-site management before hospitalization. The treatment principle is to restore myocardial blood perfusion as soon as possible. Within 30 minutes of arriving at the hospital, thrombolysis or interventional treatment should begin to save the dying myocardium, prevent the expansion of infarction area, or reduce the range of myocardial ischemia, protect and maintain heart function, promptly deal with severe arrhythmias, heart failure, and various complications, prevent sudden death, so that patients can not only survive the acute phase but also maintain as many functional myocardial cells as possible after recovery.