Patients with diabetes may experience headaches and dizziness, which often means that they have diabetic cerebrovascular disease, which is one of the typical macrovascular complications of diabetes and is very common in clinical practice because the high blood sugar status of diabetic patients is a direct stimulus to blood vessels. Whether the blood sugar is high or low, the cerebral blood vessels will produce the corresponding symptoms at the first time. If the blood glucose is high, there will be dizziness and headache, and if the blood glucose is low, the patient may be in a coma. If the patient is combined with a poor lifestyle, such as smoking, low exercise, and foods high in sodium, salt, and sugar, the patient is more likely to develop cerebrovascular pathology, which will eventually manifest as dizziness, headache, or even paralysis in severe cases, suggesting the presence of acute complications such as acute stroke. It is essential for diabetic patients to be evaluated for complications and to assess the brain in a timely manner.