Foot ulcers caused by diabetes should first be identified and then treated for the cause. The cause of foot ulcers may be fungal infection, trauma, diabetic foot and so on. If it is diabetic foot then you need to strengthen the control of blood sugar, and then for foot ulcers treatment. Diabetic foot patients should first strictly control the patient’s blood glucose, because diabetic foot is mainly caused by poor blood glucose control, first control the patient’s blood glucose, in order to better treat the foot ulcers. 1. Control blood sugar: you can choose to inject insulin to control blood sugar, it is recommended to follow the doctor’s instructions for medication. 2. For foot ulcers need to improve circulation, nutritional nerves, but also pay attention to the problem of anti-infection. There is no evidence to support the use of antibiotics for non-infected wounds. Reasonable collection of specimens from foot ulcers, bacterial culture and drug sensitivity can effectively guide anti-infection treatment. Once diabetic patients have rotten feet, they must go to the hospital in time to avoid aggravation of the condition.