Acute myocardial infarction is one of the heart diseases that seriously jeopardize people’s lives and health. Before the heart attack usually have precursor symptoms, such as: exertion or emotional excitement when the onset of chest pain, back pain, toothache, upper limb pain and epigastric pain, each time 3-15 minutes, accompanied by sweating or chest tightness, fatigue, severe cases may have a sense of near death, the attack is fatal, after relief as normal people, without any discomfort. The attacks can be repeated, once every few days, or several times a day. The danger lies in the absence of any discomfort after relief, many people work and socialize as usual, so that the sudden aggravation can not be relieved, resulting in myocardial infarction, which can make the patient disabled, or in severe cases, sudden death. Once the above symptoms of discomfort, whether or not related to the heart, the correct approach is to go to the hospital in a timely manner, check to exclude acute cardiovascular disease, so as not to cause a major disaster.