Lower extremity atherosclerosis occlusion onset age mostly in 50-70 years, men significantly more than women, men accounted for about 80%. The common sites of arteriosclerosis occlusion: the tibiofibular artery, the femoral popliteal artery and the main and iliac arteries of the lower leg, with the highest incidence in the femoral popliteal artery, which is greatly related to the repeated contraction of the muscles around the thigh adductor canal mechanical injury. Early symptoms of this disease are coldness, numbness, and intermittent claudication in the affected limb. Occlusion of the lower abdominal aorta or iliac artery manifests as soreness, weakness, and pain throughout the buttocks and lower extremities after walking, and if the symptoms occur in the lower leg, it suggests a possible superficial femoral artery occlusion. As the sclerotic occlusion progresses, the ischemia of the affected limb worsens, and persistent resting pain may occur in the toes, feet or lower legs in a quiet state, and the pain is more intense at night, and the patient often sits with his feet or knees in his arms and stays awake all night. The affected toes, feet or calves have pale skin color, decreased temperature, decreased sensation, thinning skin and muscle atrophy. Severe ischemia produces ulcers and gangrene in the toes, feet or lower legs, and those with combined diabetes are more likely to develop ulcers and are prone to wet gangrene and secondary infections producing systemic toxic symptoms. When the arterial lumen is severely narrowed or completely occluded, the arterial pulsation of the affected limb is weakened or disappears. If the lower segment of the abdominal aorta or bilateral iliac arteries are occluded, the pulsation of the femoral artery is weakened or disappears bilaterally; if the iliac artery on one side is occluded, the pulsation of the femoral artery, popliteal artery and dorsalis pedis artery on that side disappears; if the lower segment of the superficial femoral artery is occluded, the pulsation of the femoral artery is palpable, but the pulsation of the popliteal artery, posterior tibial artery and dorsalis pedis artery cannot be palpated. Therefore, arterial palpation can initially determine the site of arterial occlusion.