In recent years, with the wide application of stenting in clinical practice, stenting has rich experience in the treatment of insufficient blood supply to the myocardium caused by coronary artery disease, and has brought hope for the recovery of many patients with coronary artery disease. However, not all patients with coronary artery disease are suitable for stent surgery. For patients with more serious conditions, bypass surgery is needed if the effect of stenting is not obvious. So what are the requirements for coronary stent surgery? First, there must be symptoms of angina pectoris and myocardial infarction, and at the same time, the degree of stenosis of blood vessels should be at least 80%, that is to say, the part of the blood vessels that are blocked should account for at least 80%. In addition, the diameter of the blood vessel should be greater than or equal to 2.25 millimeters, if the diameter of the blood vessel is smaller than this, then there is no need to deal with it, which is like watering wheat in a canal, if the water flow in the canal is too thin, the impact on the range is certainly not very large, so the finer the blood vessel is, the less obvious the role of the blood vessel is, and only the diameter of the blood vessel is thick before considering stent treatment. Secondly, the number of stents should be judged according to the condition, not the more the better. Coronary heart disease is mainly a problem of coronary artery, there are three main coronary arteries, if the patient is a single blood vessel through the imaging problem, put a stent can be solved, if two have problems, we must weigh, if all three have problems, and more problems, put a stent is not as good as bypass grafting effect. The advantage of a bypass is that the problem can be solved all at once. Third, stenting is not necessary for patients who do not need surgical treatment Both bypass and stenting bring financial burden and risk, and prevention is the better way. Normally, you must control your mouth, control your diet, eat less fried food, eat more vegetables and fruits. Exercise in moderation to enhance your physical fitness. In addition, life and work should be regular, avoid excessive stress. To develop good habits, do not smoke, keep enough sleep, maintain emotional stability, do not be impatient, agitated or sullen. With the continuous progress of medicine, coronary heart disease, especially difficult coronary heart disease can be carried out through interventional therapy.