If middle-aged and elderly people have leg pain, their first reaction is to go to an orthopedic doctor. However, part of the back and leg pain is caused by orthopedic diseases, and part is caused by vascular diseases. The orthopaedic department is likely to let the lower limb atherosclerosis occlusive killer become a “fish in the net”, thus delaying the disease, and in serious cases, even limb necrosis, requiring amputation. It is best to go to orthopedics first and then to vascular surgery for leg pain in the middle-aged and elderly. In this way, lower limb vascular disease can be detected at an early stage, so that early treatment and improve the quality of life of patients. The human blood vessels are like water pipes, and over time, they also grow “scale”. Now there are two major types of vascular diseases that are already known to patients, namely cardiovascular disease and cerebrovascular disease, peripheral vascular disease, especially lower extremity arterial occlusive disease is also a very common vascular disease, but little attention has been paid to it, mainly because its early symptoms are somewhat similar to the symptoms of orthopedic lumbar spine disease. If the treatment is not timely, the toe will gradually become necrotic and black, the skin ulcerated, requiring repeated disinfection and drug exchange treatment, affecting the patient’s usual activities, serious amputation, necrotic infection to form sepsis or even life-threatening. The early symptoms of lower extremity atherosclerosis patients are usually cold, numb legs and feet, continue to progress to pain, claudication, the patient walked a couple of hundred meters or even dozens of meters, began to leg pain, sit down to rest for a while pain relief, continue to move pain will reappear. If the claudication stage is not treated, resting pain will appear afterwards, that is, the patient will have pain in the lower limbs even at rest. If left untreated, necrosis and amputation of the lower extremity may occur. The risk factors for atherosclerosis in the lower extremity arteries are the same as for other parts of the blood vessels, including family history, hypertension, hyperlipidemia, diabetes, smoking, and obesity. Almost all diabetic patients with a history of more than 10 years have lower extremity vasculopathy, but the degree varies. The onset of lower extremity atherosclerosis is also closely related to age, and the older the patient, the higher the incidence, and basically all elderly people over 70 years old have lower extremity vascular disease. In addition, smoking and overweight can also increase the probability of lower extremity arterial occlusive disease. If the elderly have leg pain, especially when accompanied by cold feet, numb feet and other symptoms, you should promptly go to the vascular surgery, sometimes the doctor feel the back of the foot can basically determine whether the patient’s lower extremity arteries “blocked”. Once diagnosed with lower limb atherosclerosis, patients should first control hypertension and other underlying diseases; if the arteries in the lower limbs have become narrowed and blocked affecting blood flow, they should be “unblocked”. Nowadays, the endovascular treatment technology is relatively mature, and vascular surgeons can restore the smoothness of blood vessels through vascular puncture, intravascular dilation and stent placement by inserting a guidewire catheter. Patients with lower extremity atherosclerosis should pay attention to: no smoking; moderate exercise and reasonable diet; avoid trauma; avoid prolonged standing; and follow medical advice on medication or treatment.