The main causes of leg artery obstruction are acute lower extremity arterial thrombosis, lower extremity arterial embolism, and chronic lower extremity atherosclerotic occlusive disease. For the acute phase of the disease, lower extremity arterial thrombosis and lower extremity venous thrombosis, the most effective method is surgical thrombus extraction, the application of thrombus catheter can be used to remove most or all of the thrombus in the blood vessel intact, and after the operation, it is necessary to apply the antiplatelet drugs, such as aspirin, clopidogrel, lipid-lowering drugs such as atorvastatin calcium, and vasodilating drugs, such as beclomethasone, cilostazol tablets, and so on. Chronic atherosclerotic occlusive disease is relatively complex and difficult to treat in the lower limb arterial disease, the current common methods are surgical and endoluminal repair, the most commonly used surgical procedure is femoral-popliteal diversion, which is the application of artificial blood vessels to improve the local ischemic symptoms, and the endoluminal surgery generally needs to be combined with a guidewire, catheter, and even other such as plaque rotary device to improve the vascular occlusion. Therefore, when leg artery obstruction occurs, it is recommended to go to a specialized vascular surgery clinic, and improve the ultrasound examination of the lower limb arteries or CTA examination of the lower limb arteries, in order to clarify the causes of vascular obstruction and choose the appropriate treatment plan.