Coronary artery surgery generally refers to intracoronary intervention or paracoronary bypass grafting. The indications for surgery are related to the location of the vascular lesion, the severity of the stenosis, the extent of the lesion, and the clinical symptoms. 1. If the stenosis of coronary vessels is more than 75%, most of the patients need coronary intervention. If the stenosis is less than 70%, but there are frequent attacks of clinical symptoms, and the effect of drug treatment is poor, it is also necessary to perform coronary intervention. 2. If the coronary vascular disease is complicated, such as in the bifurcation area, diffuse lesions, heavy calcification, etc., and it is difficult to perform intracoronary intervention after evaluation, percutaneous coronary bypass grafting surgery can be performed. Whether or not coronary artery surgery is needed, and which procedure to choose, needs to be judged in the context of the patient’s condition, and it is recommended that the cardiologist’s opinion be taken into account.