Lower extremity atherosclerotic occlusive disease is an ischemic disease of the lower extremities caused by narrowing or even occlusion of the arteries due to peripheral atherosclerosis, and it is a local manifestation of systemic atherosclerosis in the limbs. As the plaque continues to grow, the arterial lumen gradually narrows, the smoothness of the pipeline is affected, the blood flow to the lower extremities will be reduced, narrowed to a certain extent or even completely blocked, the blood flow to the lower extremities can not meet the needs, the lower extremities ischemic symptoms will occur. Lower extremity atherosclerotic occlusive disease is usually seen in middle-aged and elderly people, “diabetes, hypertension, high blood pressure, high blood fat, smoking” is the lower extremity arterial system of the four major killers. In recent years, with the aging of the population and the high incidence of metabolic diseases such as diabetes mellitus, hypertension, and hyperlipidemia, atherosclerotic occlusive disease of the lower extremities has been increasing year by year. In the vascular surgery clinic, these patients account for more than 30%. The incidence rate is relatively high in the season of low temperature. Early stage of arteriosclerosis of the lower limbs may have no obvious symptoms, or only have a slight feeling of discomfort in the feet, such as coldness, coldness, etc. Later, “intermittent” symptoms gradually appear. Afterwards, “intermittent claudication” gradually appears, which is a typical symptom of arteriosclerosis of the lower limbs. With the further development of the lesion, resting pain occurs, i.e., pain in the limb exists when the patient is at rest, and it is easy to occur when the patient is lying down and resting at night. Eventually ulcers and gangrene may develop in the limb, mostly induced by minor extremity injuries. Finally, the walking distance that the patient can tolerate becomes shorter and shorter, until the ability to walk is completely lost. How to find out if you are suffering from lower limb atherosclerosis occlusive disease at an early stage? Middle-aged and elderly people should pay special attention to the fear of cold legs and feet and soreness and numbness. If you often have cold feet, or walk a few hundred meters after the calf stomach pain, you should get up early and sleep late to see the color of their feet skin, lower limb ischemia when the feet skin color is often whitish, or purplish red. You can also use your fingers to press on the upper dorsum of the foot, two fingers below the ankle, and feel the dorsal artery of the foot for pulsation. Normally, a pulse can be felt. If you can not feel the dorsalis pedis artery, we must be alert to lower extremity atherosclerosis. The “three high” people, or have a long history of smoking middle-aged and elderly people, especially can not relax vigilance. If “intermittent claudication” has already occurred, it is even more important to be alert to the occurrence of lower limb arteriosclerosis. In addition, the lower extremity arteriosclerosis occlusive disease should not be taken seriously, it and coronary heart disease, cerebral infarction are vascular sclerosis disease, only the occurrence of different parts. When a cerebral infarction or heart attack, not timely treatment will be life-threatening, and lower limb arteriosclerosis occlusion if not improved in time, will also lead to serious complications, light amputation and disability, heavy loss of life. In the late stage of the disease, the patient’s lower limb arteries may even evolve from hardening and stenosis to complete occlusion, then even at rest the limbs are also in extreme ischemia, the nerve endings produce severe pain called “resting pain”, especially at night and lower temperatures when the symptoms are severe. At the same time, the skin, muscle tissue ischemia so that its vitality is gradually lost, and ultimately there will be affected feet, especially toes ulcers or black gangrene, necrotic parts of the recurrent infections with the general drugs often can not be controlled, resulting in the so-called “old rotting feet”. At this time to go to the hospital again, has missed the best time for treatment, although can partially improve the blood flow of the residual limb, but has occurred in the necrosis of that part of the limb still need to amputation surgery. If the patient also suffers from diabetes, hypertension and other metabolic diseases, the mortality rate is very high. Some data show that the lower limb atherosclerosis occlusive disease patients 1 year amputation rate of 30%, 5-year mortality rate of 10% ~ 15%; “intermittent claudication” patients 5-year mortality rate of 30%; resting pain, ulcer gangrene of severe patients, 5-year mortality rate of up to 70%. Lower limb atherosclerosis is a progressive disease, early detection, early diagnosis, early treatment, can effectively avoid the risk of amputation and other risks, in order to improve the quality of life.