Diabetic foot is a general term for foot pain, numbness, skin ulceration, toe gangrene and other lesions caused by a combination of diabetic factors, and is a disease state in which ulceration and gangrene occur due to inadequate arterial perfusion caused by macrovascular and microvascular lesions. Diabetic foot is one of the major causes of disability and even death in diabetic patients, which not only causes pain to patients, but also adds a huge care and economic burden. One of the main causes of diabetic foot is atherosclerosis of the lower extremity caused by diabetes mellitus, narrowing or even occlusion of the arterial lumen, which causes ischemia and hypoxia in the distal part of the lower extremity, especially the foot. Interventional treatment can restore blood flow to the foot effectively and quickly, relieve pain and promote ulcer healing, with immediate effect, and become the preferred treatment for diabetic foot.