The diabetic foot is one of the common chronic complications of diabetes, caused by diabetic vascular and neuropathy, which typically manifests as foot ulcers and gangrene. Severe diabetic foot often requires amputation because the ulcers do not heal for a long time. According to statistics, 70% of the world’s amputations are performed on diabetics, and diabetics are 25 times more likely to “lose their legs” than non-diabetics, and more graphically, every 30 seconds a leg is amputated because of diabetes. It can be said that diabetic foot is also an evil consequence of poorly controlled diabetes, which is based on diabetic neuropathy and vascular disease. Firstly, because of neuropathy, the protective reflexes of the nerves disappear and the patient may be unaware of the injury, which is bound to cause various serious injuries. In addition, patients with poorly controlled disease also tend to have weaker resistance and are prone to infection, which in turn makes the wound often become seriously infected and gradually develop into gangrene.