After people reach the age of 40 or 50, blood vessels gradually aging, coupled with unhealthy lifestyle habits, it is easy to cause atherosclerosis and eventually occlusion of the lumen. He said, for example, it is easy to block, especially in patients with high blood lipids, blood is like water with many impurities, easy to form scale to cause lumen narrowing or even occlusion. Westerners have a higher incidence than the Chinese, which is related to their high-fat diet. In addition, many patients with atherosclerotic occlusion of the lower limbs have intermittent claudication. After walking for a period of time, the foot will feel pain, and it will be fine again after resting. However, as the disease progresses, the distance walked at one time will become shorter and shorter, for example, he originally had to take a break to walk one kilometer, but later he may have to take a break to walk less than 50 meters. These patients eventually develop persistent pain, whether during exercise or at rest, which is medically known as “resting pain”. If the lower extremity artery occlusion is not treated in time, the blood cannot be transported to the past, and the ischemic tissue will gradually become necrotic, which is manifested by the gradual blackening and ulceration of the patient’s lower extremity, eventually requiring amputation. People who have been smoking, high blood pressure, obesity, high-fat diet, pay special attention to the health of the blood vessels, especially people with diabetes, need to pay more attention to protection, once the lower limb artery occlusion, the degree of vascular damage will be more serious. Once the situation of “intermittent claudication” occurs, promptly go to the hospital to exclude vascular disease.