1.Carotid stenosis <60% without clinical symptoms or carotid stenosis <50% with clinical symptoms, drug therapy is preferred; 2.Carotid stenosis >50% with clinical symptoms, carotid endarterectomy + drug therapy is preferred; 3.If the conditions of 2 are met, but the patient is a “high-risk patient”, carotid stenting + drug therapy can be chosen. High risk” includes “high anatomic risk” and “high clinical risk”. High anatomic risk” includes: recurrent stenosis after carotid endarterectomy Prior ipsilateral neck radiation therapy with permanent skin damage Prior major neck surgery Vocal cord palsy Presence of tracheostomy “High clinical risk” includes: renal failure requiring dialysis Very low left ventricular function Chronic pulmonary disease dependent on oxygen or hormonal therapy 4. Carotid endarterectomy + medication preferred; 5. Carotid stenosis without clinical symptoms (regardless of the degree of stenosis) is opposed to carotid stenting.