For patients with 80% stenosis, stent implantation is generally recommended for long-term safety. When patients with coronary artery disease have symptoms of angina pectoris, and usually find corresponding evidence of cardiac ischemia on electrocardiogram, and when coronary artery CT or coronary angiography reveals that the vascular occlusion is greater than 75%, it is generally recommended that the patient be implanted with a stent for treatment. This is to prevent life-threatening acute myocardial infarction caused by vascular occlusion induced by exertion or emotional stress. Cardiac stenting is a widely used and technically mature method for the treatment of patients with coronary artery disease, which can effectively alleviate the progression of the patient’s condition, with little side effects and relative safety, and after the operation, patients should cooperate with the corresponding antiplatelet and lipid-regulating treatments to delay the occurrence of restenosis in the stent. For 80% stenosis of the carotid artery or lower limb vessels, it will lead to a reduction of distal blood flow, which will cause insufficient blood supply to the brain, intermittent claudication and other clinical manifestations, stenting or other surgical treatments are also generally recommended. If stenosis is found, you should go to the hospital in time, choose the right treatment under the guidance of your doctor and have regular checkups.