A 2-hour postprandial blood glucose value of 8mmol/L is on the high side, so it is more serious and requires prompt medical attention. Clinically normal people 2 hours postprandial blood glucose value should be less than 7.8mmol / L, when the blood glucose value between 7.8~11.1mmol / L to consider the abnormal glucose tolerance, if the blood glucose value is greater than or equal to 11.1mmol / L to reach the diagnostic standard of diabetes, when the 2 hours postprandial blood glucose value of 8mmol / L, the result is higher than normal, belongs to the state of high, it is serious, you can control diet and exercise to achieve the purpose of controlling blood glucose. Control diet and exercise to achieve the purpose of blood sugar control. If you find that the blood sugar is higher than normal value, you should seek medical treatment in time and standardize the treatment under the guidance of doctors.