Patients with “three highs” refer to those with hypertension, hyperlipidemia and diabetes. With the popularization of medical knowledge, heart and cerebrovascular diseases and other serious complications caused by the “three highs”, such as heart attack, cerebral infarction, diabetic nephropathy, etc., have been recognized by medical workers and the general public, while lower limb vascular diseases caused by the “three highs” have not been widely recognized. It has been widely recognized by medical practitioners and the general public. Comparatively speaking, the lower extremity arterial complications of diabetes mellitus DD diabetic foot, people are relatively familiar with some, but hypertension, high blood pressure, high blood fat caused by lower extremity arterial disease DD lower extremity arteriosclerotic occlusive disease, people know very little. If hypertension and hyperlipidemia are not well treated, vascular complications, mainly atherosclerosis, can occur. Atherosclerosis does not only occur in the coronary arteries of the heart, it can occur in any medium to large artery in the body and it is not uncommon for it to occur in the arteries of the lower limbs. The prevalence of intermittent claudication ranges from 0.3% to 7.7% of the population and tends to increase with age. After arterial stenosis or occlusion in the lower limbs, there will be cold legs, numbness, weakness, inability to walk long distances or even pain, which may lead to foot ulcers or gangrene of toes in serious cases. General lower limb arterial stenosis 1/2 or more before the emergence of obvious symptoms, and from mild stenosis to blockage 1/2 about more than ten years, during this period of time the patient has no symptoms or symptoms are very light, only feel the legs cold, weakness, can not walk long distances. Once intermittent claudication occurs, i.e., walking a distance (such as about 500 meters) appeared calf soreness, pain, cramps, need to sit down to rest for a while, and then continue to walk the same distance after the symptoms reappear, it shows that in the activity of the legs have been obvious insufficient blood supply. However, at this time, most patients will think that it is lumbar leg pain or sciatica and treated in non-vascular specialties. Many people are also misled by advertisements into thinking that calcium deficiency is the cause in middle-aged and old-aged people and take large amounts of calcium supplements for a long period of time. If the patient does not get the correct diagnosis and treatment in this period, the condition will further accelerate the development, the patient will also feel pain in the lower limbs when resting, and the condition is serious, even the toes will turn black and necrotic. At this time, the arteries of the lower limbs have been severely narrowed or even occluded, and some patients have to undergo high amputation. Therefore, “three high” patients should pay attention to the emergence of cardiovascular and cerebrovascular complications, but also pay attention to the lower extremity vascular lesions. When the lower limbs feel cold, weak and unable to walk long distances, they should go to the vascular surgery department in time. Through the physical examination by specialized doctors and relevant instruments, such as arterial ultrasound, arterial segmental pressure measurement, etc., early diagnosis can be made and effective treatment measures can be taken in time to avoid amputation of lower limb vascular lesions caused by rapid aggravation.