The formation of rotten legs or leg ulcers in diabetic patients is generally related to poor blood glucose control, and may be combined with peripheral neuropathy of the lower extremities or arterial vascular lesions of the lower extremities, which may also lead to the formation of rotten retreats or leg ulcers. The specific treatment for patients with rotten legs is as follows: 1. insulin should be used for blood sugar control, because the drop in blood sugar is helpful for promoting ulcer healing, and insulin itself also has the ability to promote protein and fat synthesis, which is also helpful for ulcer healing. 2. rotten legs should be treated by strengthening local medication changes, and regular medication changes and treatment should be carried out at the regular hospital surgery or burn surgery. In addition to blood sugar control, patients can take oral nerve nourishing drugs or oral vasodilating drugs, which can improve the blood flow of lower limb arteries and help the healing of the ulcer surface.