Myocardial ischemia can easily cause a very ambiguous concept, many people are not clear what is myocardial ischemia, once the electrocardiogram appears abnormal, they worry that it is caused by myocardial ischemia, so whether in fact it is so. Myocardial ischemia is a pathological state in which the blood perfusion of the heart is reduced, resulting in a decrease in oxygen supply to the heart and abnormal myocardial energy metabolism, which cannot support the normal work of the heart. The symptoms of this condition are pain behind the sternum or in the precordial region, chest tightness, palpitations, shortness of breath, and difficulty in breathing. One of the main symptoms of myocardial ischemia is chest tightness and chest pain. During the attack of myocardial ischemia, patients will feel chest tightness, and in severe cases, chest pain, the degree of which will vary due to different causes. From both perspectives, there is an activity-related chest tightness and chest pain that needs to be examined to see if it is myocardial ischemia. The chest pain and heart damage caused by myocardial ischemia are not easily treated clinically. Usually, chest pain caused by myocardial ischemia can occur at any time, as long as there are triggering factors. Especially in the morning when waking up, it is easy to have chest pain, and each time it occurs, the pain usually lasts for 3 to 5 minutes, not too long, and if it exceeds 30 minutes, then myocardial infarction may occur and should be taken seriously. For chest pain caused by myocardial ischemia, several points need to be noted: First, the adverse factors causing myocardial ischemia should be controlled, in addition to strengthening exercise; Second, early detection, early diagnosis and early treatment; Third, treatment can be relieved by drugs, but also interventional and surgical treatment; Fourth, long-term maintenance and maintenance of blood vessels are needed after treatment to prevent further development of the disease.