The initial manifestation of myocardial infarction is angina pectoris, if the chest pain persists, be alert to the attack of myocardial infarction, to go to the hospital through the electrocardiogram, cardiac ultrasound, coronary artery CT, coronary artery angiography cooperation of myocardial imaging through these tests can be clarified by the degree of myocardial infarction, the scope of the infarction, and the severity of the situation. In addition, according to the degree of coronary stenosis, if the stenosis is less than 70%, conservative treatment with medication can be given, and if the stenosis of the coronary artery is more than 70%, surgical treatment with coronary stent implantation or even coronary artery bypass grafting surgery needs to be given. Therefore, once this situation occurs, you need to go to the hospital immediately, through the examination to assess the patient’s condition and the next step of the treatment plan. Coronary dilation and anticoagulant medications such as isosorbide mononitrate, clopidogrel, etc. are also needed after passing the treatment.