If diabetic patients always appear dizziness symptoms, must consider two reasons: 1, blood sugar control is not stable, not stable blood sugar will cause significant fluctuations in blood glucose, the patient’s blood glucose is like a roller coaster as high as low, this fluctuation in blood glucose will have a corresponding impact on the cerebral vasculature, which causes insufficient blood supply to the brain, inducing dizziness performance, the patient may also appear dizziness, blurred vision and so on. 2, diabetes combined with macrovascular pathology, and macrovascular pathology is acting on the cerebrovascular because diabetic cerebrovascular lesion is currently a very common type of chronic complication. 2, diabetes mellitus combined with macrovascular lesions, and macrovascular lesions is acting on the cerebral blood vessels, because diabetic cerebrovascular lesions is currently a very common type of chronic complications, the patient’s characteristics is because of the long-term poor glycemic control, leading to cerebral vascular atherosclerosis, resulting in the formation of the pre-stroke such a manifestation, the patient may have a headache, dizziness, fatigue, numbness of limbs such a symptom. The patient may experience headache, dizziness, fatigue, and numbness of the limbs. So for symptoms like dizziness, diabetic patients must assess the cause of the disease in a timely manner.