First of all, in the early stages of diabetes, it is necessary to control blood sugar to prevent the occurrence of diabetic foot. If diabetic foot has already appeared in the early stages of diabetes, then it is important to prevent the further development of diabetic foot into late-stage ulceration and gangrene. Firstly, proper care should be taken to avoid damage to the skin. Secondly, it is crucial to control blood sugar, complete examination of lower limb vascular ultrasonography or angiography, ascertain the extent of lower limb vascular lesions, and improve blood circulation. If there is an occlusion of the blood vessels in the lower limbs, surgical methods should be used as soon as possible to open the vessels and maintain blood supply, to prevent further deterioration.