There are many complications of diabetes, and diabetic foot is a very typical and common complication. Clinically, it is common for diabetic patients to have ulcers on both lower extremities, which are difficult to heal. Patients often have difficulty sleeping at night due to pain; the skin temperature of the affected extremities decreases, sensation is reduced, and claudication occurs when walking for a long time. Due to the difficulty of healing and easy necrosis of the foot ulcer, traditional treatment will eventually lead to amputation, but in recent years, due to the rapid development of vascular interventional technology, the rate of limb preservation in diabetic foot patients has increased significantly. Once these patients are successfully revascularized, the pain is significantly reduced and the foot ulcer can heal on its own within one month, and with diabetic medication and dietary therapy, the recent and medium-term results are remarkable. If the patient has foot symptoms after 2~3 years, interventional treatment can also be performed here.