Diabetic wounds that do not heal for a long time may be caused by lack of glycemic control, wound infection, abnormal coagulation function, etc. They can be treated with medicines for lowering blood glucose, anti-infection and pro-coagulation respectively, and should be used under the guidance of a doctor to clarify the causes. 1. Lack of glycemic control: If the patient’s blood sugar is too high, it may lead to slower wound healing. Oral hypoglycemic drugs such as metformin and acarbose can be used, or subcutaneous injection of insulin to lower glucose. 2. Wound infection: diabetic patients with high blood sugar are prone to infection, which may lead to slow wound healing, and can be treated with appropriate antibiotic drugs. 3. Abnormal coagulation function: the use of anticoagulant drugs, leukemia, aplastic anemia and other coagulation abnormalities may also lead to wounds do not heal for a long time, it is recommended to improve the relevant examination, if necessary, with procoagulant drugs treatment. If the diabetic wound does not heal, please consult the hospital in time and take active diagnosis and treatment to avoid aggravating the condition.