The degree of fatality of coronary artery disease depends on the location and degree of stenosis, and also, very importantly, on whether the patient has had an acute myocardial infarction. If the stenosis is only a mild stenosis of the circumflex branch, it is not very fatal because the coronary artery of the heart consists of three vessels and the circumflex branch is only one of them. If the patient has an acute myocardial infarction, the degree of stenosis of the circumflex branch is more severe, close to occlusion, which is generally fatal in the acute stage, but of course, it is only relatively high risk, and at this time, we should follow the doctor’s advice and choose to do stenting surgery. If there is really no stent surgery conditions, you can choose surgical bypass grafting treatment, can fundamentally solve the problem of coronary artery stenosis, after surgery should be long-term medication.