Normal people with 2-hour postprandial blood glucose of 8.6mmol/L can do without insulin injection; diabetic patients with 2-hour postprandial blood glucose of 8.6mmol/L in the course of treatment do not need to take insulin. Normal people’s 2-hour postprandial blood glucose should not exceed 11.1mmol/L, 2-hour postprandial blood glucose between 7.8~11.1mmol/L suggests that glucose tolerance may be impaired. Postprandial 2-hour blood glucose 8.6mmol/L can be actively diet and exercise control, if the blood glucose can not be self-recovery, it is necessary to consult a doctor in a timely manner, under the guidance of the doctor for further treatment. Postprandial blood glucose for diabetic patients is recommended to be less than 10.0mmol/L. If the 2-hour postprandial blood glucose is 8.6mmol/L and the blood glucose fluctuation is not big, it suggests that the blood glucose control is good, and you can not take insulin. A 2-hour postprandial blood glucose of 8.6mmol/L should be treated under the guidance of a doctor.