The duration of myocardial infarction is mainly related to the degree of myocardial infarction and patient compliance, and needs to be analyzed on a case-by-case basis, and cannot be generalized. If the blood vessel causing the myocardial infarction is very critical and the degree of infarction is very serious, the risk is very high, and may be life-threatening, causing sudden death and subsequent complications. If the myocardial infarction is small and the infarcted vessel is a relatively minor vessel, the risk is relatively small. If the patient compliance is very good, timely standardized treatment, low-salt, low-fat, low-cholesterol diet, eat more fresh fruits and vegetables, maintain a balanced state of mind, appropriate exercise, quit smoking and drinking, and insist on taking effective medications, myocardial infarction can survive for decades. If problems are detected, they should be treated promptly and early in the hospital. After an attack of myocardial infarction, patients should pay attention to rest, do not do heavy physical labor, and maintain sufficient sleep.