Myocardial infarction is a condition in which the myocardium becomes necrotic due to reduced blood flow in the coronary arteries, resulting in blockage of blood vessels and severe and persistent ischemia in the myocardium. Generally, 20-30 minutes after the onset of myocardial ischemia, the myocardium begins to gradually undergo necrosis, and if myocardial ischemia continues for 1-2 hours without intervention, the myocardium develops massive edema, coagulation, and necrosis. Therefore, in case of myocardial infarction, timely treatment is recommended to avoid delaying the condition. Usually, patients with acute myocardial infarction have chest pain, chest tightness, significant pressure and reactions such as near-death feeling at the onset, when they should immediately stop their activities and can take drugs such as nitroglycerin under the tongue to relieve the pain. If the pain is still not relieved, it is recommended to go to the hospital immediately for treatment. The common treatment methods are drug therapy, interventional therapy and surgery, and the best effect of drug thrombolysis is generally within 3-6 hours of onset. Interventional treatment is usually performed within 12 hours to improve blood supply by dilating blood vessels. Treatment such as bypass surgery can also be considered, and treatment should be chosen according to the patient’s physical condition. Patients with myocardial infarction should follow medical advice after the symptoms of the acute phase are relieved, and at the same time, they should also undergo regular review. In daily life, it is also necessary to maintain a low-salt, low-fat, low-cholesterol diet, minimize the consumption of spicy and stimulating foods, and consume more fresh vegetables and fruits. It is also important to get enough sleep, exercise properly, avoid being sedentary, and try to keep your mood happy to promote recovery.