In recent years, the number of diabetic patients in China has increased rapidly, which has become a social problem that seriously threatens people’s health, and the onset of the disease is characterized by further rejuvenation. The most terrible thing about diabetes itself is its complications, among which diabetic foot is one of the more serious complications and the main cause of disability, which has seriously affected the quality of life of diabetic patients. As the number of diabetic patients increases, the prevalence of diabetic foot also increases year by year. The diabetic foot is defined as foot infection, ulceration and gangrene, which is associated with varying degrees of peripheral vascular disease and distal nerve abnormalities in the lower extremities. Patients with diabetes often experience abnormal sensations in the foot, such as numbness and pins and needles; due to the gradual narrowing of the vascular lumen, patients experience numbness and pain in the lower extremities and walk shorter and shorter distances, called intermittent claudication, or patients feel pain, even when sitting still, called resting pain. The traditional treatment for diabetic foot is to apply drugs or surgical vascular bypass surgery to control the condition and avoid amputation. However, the arteries in the lower extremities of diabetic foot patients are mostly diffusely narrowed and occluded, and the lesions are severe, so the effect of medication and bypass therapy is not satisfactory. Advanced patients often require surgical amputation, which not only affects the patient’s quality of life, but also increases the burden on society and the patient’s family, and most patients and their families are unwilling to accept it. With the continuous advancement of medical research, its treatment has slowly evolved from simple symptomatic treatment —- amputation to maximizing limb preservation and improving patients’ quality of life as the goal. This change in concept is due to the rapid development of increasingly mature vascular surgery, especially minimally invasive interventional treatment in vascular surgery. The so-called minimally invasive interventional treatment simply means that the femoral artery is punctured at the root of the thigh, and under the guidance of angiography, a “balloon” in a constricted state is slowly placed into the occluded part of the stenosis, and then the “balloon” is dilated to expand the blood vessel, so that the blocked blood vessel can be restored to its original position. The blood supply to the distal extremities of the lower extremities is restored by expanding the blood vessels. This treatment is performed under local anesthesia, and the patient is awake during the procedure, and the side effects of local anesthesia are relatively small compared to other anesthesia methods. Therefore, the intervention is not only suitable for patients who are in good health, but also for patients who are old, frail, or have combined diseases of other organs. The treatment is less painful, fast-acting and has no special contraindications. It can significantly improve the blood supply to the lower limbs, reduce the symptoms of pain, numbness and soreness of the lower limbs, and give the foot ulcers and infections a chance to heal, reduce the amputation rate and preserve the function of the affected limbs to the maximum extent.