Arterial stenosis is generally due to the formation of atherosclerotic plaques, which should be treated by regular hospitalization, application of medication, and, if necessary, interventional therapy with implantation of a stent; or surgical bypass surgery may be required. If the stenosis is caused by arteritis due to immune disease, it needs to be treated actively against the primary disease. Atherosclerotic disease, because of atherosclerotic plaque formation, leading to arterial narrowing. To improve the lifestyle, such as quit smoking and alcohol, low-salt and low-fat diet. Formal application of antiplatelet drugs such as aspirin, oral atorvastatin and other drugs to regulate lipids to stabilize the endothelium, to actively stabilize blood pressure, blood sugar control. If the symptoms of myocardial ischemia, or cerebral ischemia, or pain in the lower limbs caused by arterial stenosis cannot be controlled after lifestyle improvement and medication, it is recommended to undergo angiography, as severe stenosis may require interventional stent implantation in order to open up the blood vessels and improve blood flow. If stenting is not possible, surgical cardiovascular bypass or cerebrovascular bypass surgery may be required. If the arterial stenosis is caused by an immunologic disease, such as aortitis, regular rheumatology treatment is required, and interventional or surgical intervention may also be necessary.