Diabetic patients are prone to atherosclerosis, which often causes narrowing and occlusion of the arteries in the lower limbs, especially extensive narrowing and occlusion of the arteries in the lower legs, resulting in limb ischemia. The manifestation is difficulty in walking, walking a short distance to feel cold, numbness, pain in the calves and feet, must rest for a while to walk again, but not far will again cold, numbness, pain in the calves and feet, medically called intermittent claudication; then serious performance for the calves and feet continued cold, numbness, pain; there are also patients due to foot trauma or infection (often in the toes), wound ulceration for a long time, unbearable pain, affecting eating, sleeping, very painful. sleep, very painful. These patients are caused by arterial stenosis and occlusion of the lower limbs due to atherosclerosis, especially extensive narrowing and occlusion of the arteries of the lower legs, resulting in limb ischemia. This foot disease, which is unique to diabetics, is called diabetic foot. Diabetic foot patients with arterial lesions mainly in the lower legs and feet, these parts of the blood vessels are long and thin, generally only 2-3mm in diameter, treatment is more difficult. In the past, in addition to the treatment of diabetes is the treatment of blood circulation, anti-inflammatory, pain relief, etc.; when the vascular condition is better, you can also use their own venous vessels or artificial blood vessel bypass, but because the blood vessels are too thin, long-term results are not ideal; many patients are willing to conservative treatment, often after a long time, have no choice but to amputate the limb before the end. It is the common desire of doctors and patients to find a treatment method with less pain and better efficacy. In the past, this method was not ideal for the treatment of long and thin arterial lesions, but with the development of technology, continuous improvement and innovation of equipment, intracavitary intervention can also be applied to arterial disease of the lower leg. The method is simple: a needle is stabbed at the root of the thigh, a very thin catheter is fed, and the narrowed and occluded calf artery is opened with equipment, or a stent or a balloon is used to unblock the calf artery, so that the blood supply to the calf and foot is better and the patient’s foot does not hurt, and the ulcer will heal quickly. This method is simple to treat, less painful, outstanding effect, immediate effect, longer maintenance time, and repeatable treatment, really tricky to cure – really a gospel for diabetic foot patients.