To know the self-help method of heart attack, first need to understand what is myocardial infarction, what are the common causes of myocardial infarction, which symptoms should be highly suspected for myocardial infarction. Acute myocardial infarction is mainly caused by coronary artery atherosclerosis, and previous heart disease, smoking, diabetes, dyslipidemia, overweight or obesity, emotional excitement, weather changes, etc. may be the cause of myocardial infarction. Patients mainly manifested as a sudden onset of symptoms, precordial pressure pain or suffocation, patients often have the feeling of dying, the general symptoms last a long time and often rest or sublingual fast-acting heart pill, nitroglycerin and other drugs can not be relieved! When the above symptoms, we should be highly suspicious of acute myocardial infarction. Heart attack often have some precursors, some patients may have a few days before the onset of fatigue, chest discomfort, palpitations, shortness of breath, precordial pain and other common symptoms of coronary heart disease. If such an unfortunate event does occur to us, we must be calm and collected, and fear will only further aggravate the burden on the heart, thus causing heart failure to occur sooner. The first thing we need to do at this time is to immediately rest in bed, prohibit all activities, maintain a seated position, take deep breaths, relax, keep the environment quiet, and keep warm and do not get cold. Family members or yourself should call an ambulance as soon as possible. If the conditions allow with a stretcher to the hospital, do not help walking, duration of more than 30 minutes at this time, any excess activity, may be the last straw to crush the heart. If you have the conditions as soon as possible on the oxygen, oxygen can be in a certain degree of relief of the heart’s lack of oxygen, to save the necrotic heart muscle cells, while immediately chewing 300 mg of aspirin. Finally, we should tell you that, with the development and progress of science and technology, most of the diseases can be cured as long as early detection and early treatment, heart attack is no exception, as long as we use the correct method, the prognosis of this disease is still very good.