Myocardial infarction is a kind of common and extremely cruel disease, which means that the blood vessels of the heart are suddenly and completely blocked, causing the interruption of blood flow to the heart and leading to necrosis of cardiomyocytes, and it belongs to the category of acute and critical diseases. Its clinical manifestations are mostly severe and persistent retrosternal pain, which cannot be completely relieved by rest and nitrate drugs, accompanied by leukocytosis, fever, accelerated blood sedimentation, increased serum cardiac myosin activity and progressive electrocardiographic changes, which can be complicated by arrhythmia, shock or heart failure and other comorbidities, and can often be life-threatening. Therefore, daily preventive work is not to be underestimated. To avoid the emergence of myocardial infarction, is the need to do the following preventive work A, active treatment of primary diseases, such as hypertension, high blood pressure, high blood fat, heart disease, diabetes, etc., in accordance with the doctor’s instructions to control, regular physical examination. Secondly, it is forbidden to move heavy objects, especially for people who have the risk of myocardial infarction, it should be forbidden to lift heavy objects. Bend over and hold your breath when lifting heavy objects. Third, develop good living habits, quit smoking, moderate drinking, smoking can cause small artery spasm, reduce cerebral blood flow, accelerate atherosclerosis, drinking a lot of alcohol, can promote the rise in blood pressure, but also can cause myocardial contraction force is reduced, damage to the heart blood vessels. Fourth, mental relaxation, enjoyable life, maintain a calm state of mind, anything to be able to take things calmly, strengthen personal cultivation, correctly treat life and work in the contradiction. Fifth, pay attention to diet, eat more vegetables, fruits, vitamin-rich foods; avoid high fat, high cholesterol, high sugar, high sodium food intake. Sixth, moderate exercise, weight control, enhance heart function. However, you should avoid competitive games, even if the game should be exercise, increase the fun for the purpose, not to win or lose on the high and low. Seven, do not take a bath on a full stomach or hungry, bath water temperature is best with the body temperature, the water temperature is too high can make the skin blood vessels expand significantly, a large amount of blood flow to the body surface, may cause heart and brain ischemia. Bathing time should not be too long, coronary heart disease is more serious patients should be bathed with the help of others. Eight, the elderly should not rush to get up in the morning, it is best to lie still for 10 minutes after slowly get up to prevent postural hypotension to cerebral thrombosis. Nine, pay attention to climate change persistent low temperature, wind, rain is one of the triggers of acute myocardial infarction. So every time the climate is bad, patients with coronary heart disease should pay attention to keep warm, or take appropriate medication to expand the coronary artery for protection. If you can do the above, then you can greatly reduce the chance of myocardial infarction.