The normal value of blood glucose two hours after meal should be less than 7.8mmol/L, for diabetic patients generally control non-fasting blood glucose not more than 10.0mmol/L. The normal range of two-hour postprandial blood glucose is less than 7.8 mmol/L. If the two-hour postprandial blood glucose is between 7.8 and 11.0 mmol/L, then it belongs to hypoglycemia, and if it is more than 11.1 mmol/L and accompanied by diabetic symptoms, then it has reached the diagnostic standard of diabetes mellitus. For diabetic patients, the goal of glycemic control is generally non-fasting blood glucose does not exceed 10.0mmol / L, but also need to be based on individual circumstances to set glycemic control goals. If abnormal blood glucose values occur, it is recommended to go to the hospital.