Clinical symptoms of dizziness in diabetic patients after meals are commonly caused by the following reasons: 1, diabetic patients eat too much, especially staple foods, a large number of carbohydrates into the intestinal tract, aggravating the burden of the gastrointestinal tract, the body’s blood redistribution, a large amount of blood redistribution to the gastrointestinal tract, thus making the blood supply to the brain drop, which can cause insufficient blood supply to the brain, causing dizziness symptoms. 2, Diabetic patients with combined autonomic neuropathy, prone to postural hypotension, the regulation system of blood pressure is slow, a large number of carbohydrates into the intestinal tract after meals, stimulating insulin secretion, aggravated by the risk of patients with low blood pressure, the patient can often appear symptoms of dizziness. Therefore, for diabetic patients diet should eat small meals, avoid satiety.