In recent years, the younger age of onset of acute myocardial infarction has become a trend, and it is common for many young and middle-aged men in their 30s and 50s who seem to be in good health to have an acute myocardial infarction in clinical practice. They may not usually have symptoms of chest tightness and chest pain, and there are no abnormalities in the ECG on routine physical examination, but the absence of symptoms usually does not mean that they are healthy. Most of these young and middle-aged patients have long-term smoking, high-fat and high-calorie diets, and high mental stress, all of which contribute to premature aging of blood vessels and even the early appearance of atherosclerotic plaques in the heart vessels. Young and middle-aged patients with acute myocardial infarction may not usually have any uncomfortable symptoms and the problem of narrowing of the heart vessels is not serious, but the plaques in the blood vessels are more unstable than those of the elderly, and once the plaques rupture, they are prone to sudden acute myocardial infarction, and once the sudden acute myocardial infarction occurs, the sudden death rate will be much higher than that of the elderly. This is because the underlying lesions of the coronary arteries supplying blood to the heart are lighter in young people before the onset of the disease, and the heart has failed to establish the collateral circulation between vessels, without the protective effect of “myocardial ischemic pre-adaptation”. In other words, once the blood vessels are completely occluded and blood flow is interrupted in young people, the area of myocardial infarction will be larger, which will easily lead to serious complications and be too late for treatment. In addition, young and middle-aged patients do not pay enough attention to their own health, and some of them do not pay attention to sudden onset of chest tightness and chest pain, and do not think that it will be an acute myocardial infarction and immediately seek medical attention, but think that they are just tired and can endure it, which leads to missing the opportunity to seek medical attention to open the blocked blood vessels in the first place when acute myocardial infarction occurs, which greatly increases the occurrence of sudden death in the acute phase of myocardial infarction or after the acute phase The occurrence of heart failure after myocardial infarction.