Whole wheat flour and buckwheat flour glycemic index is similar, can be eaten, but to control the amount of intake, at the same time to cooperate with the doctor to actively control blood sugar. People with high blood sugar is suitable for the choice of whole grain foods, including grains, coarse grains, mixed legumes, etc., whole wheat flour glycemic index of 65, buckwheat flour glycemic index of 66.7, not much difference. But buckwheat flour dietary fiber is higher, according to personal dietary preferences. For patients with diabetes, usually must be taken on time to lower blood sugar medication, but also on time to monitor blood glucose, with the doctor for treatment as soon as possible, and to pay attention to improve the diet structure, avoid eating some sugary foods, such as cake, honey, candy and so on. For patients with high blood sugar, it is recommended to consult a doctor in time and take reasonable diet and medication under the doctor’s guidance.