If the patient fasting state blood glucose 6.6mmol / L need to pay attention to diet, appropriate to reduce the amount of staple food, if one hour or two hours after the meal blood glucose 6.6mmol / L, normal diet can be. Fasting state blood glucose 6.6mmol / L belongs to the high range of blood glucose, need to pay attention to diet, control the total intake, reduce the appropriate amount of staple food, eat more vegetables, increase protein intake, less oil and less salt, to eat less desserts and cakes and other foods. If the patient’s blood glucose 6.6mmol / L in one hour after meals or two hours after meals, belongs to the normal value, no need to worry, normal diet can be. Fasting blood glucose 6.6mmol/L is recommended to go to the hospital in time.