Diabetic complications of vasculitis can be treated and controlled, the treatment program has strict control of blood glucose, pay attention to warmth, the use of antiplatelet, anticoagulation and improve the symptoms of the drug, if necessary, can be installed stent surgical treatment. Vasculitis as a complication of diabetes is not uncommon in clinical practice, mainly due to macrovascular lesions caused by poor blood sugar control. The common symptoms of vasculitis are numbness of the limbs, coldness, fear of cold, soreness and discomfort, easy fatigue, heavy feeling, and in severe cases, intermittent claudication, resting pain or even ulcers and gangrene. The treatment has the following directions: 1. Strictly control the blood sugar to reach the standard, fasting blood sugar should be less than 7.0 millimoles per liter, 2 hours after meal blood sugar should be less than 10.0 millimoles per liter, and keep enough sleep and avoid exertion and bad life habits, don’t smoke and drink alcohol, etc.. 2. Pay attention to keep warm in winter time. When it is cold, vasculitis will aggravate and cause ischemia, leading to necrosis of the lower limbs, so it is very important to keep warm. 3. Conservative treatment with drugs: clinically, anti-platelet aggregation drugs are often used, such as aspirin or clopidogrel; anticoagulant drugs, such as warfarin; symptomatic drugs, such as bezoprost sodium tablets, cilostazol and so on. 4. For severe ischemia, open surgery or endoluminal stent implantation should be chosen according to the imaging results. Diabetic complications of vasculitis should be timely medical treatment, under the guidance of the doctor according to the specific conditions of standardized treatment.