Two-hour postprandial blood glucose should be less than 7.8mmol/L for 65-year-olds without diabetes, and less than 10mmol/L for 65-year-olds with diabetes. Two-hour postprandial blood glucose requirements from eating the first meal over two hours measured blood glucose concentration, the normal range should be less than 7.8mmol / L, so 65-year-old non-diabetic elderly two-hour postprandial blood glucose should be less than 7.8mmol / L. However, the two-hour postprandial blood glucose standard can be appropriately relaxed for 65-year-old diabetic patients. For newly diagnosed elderly diabetic patients with a short course of disease, low risk of hypoglycemia, application of non-insulinotropic glucose-lowering drug therapy mainly, and good assisted-living conditions or self-care ability, the two-hour postprandial blood glucose should be controlled within 10mmol/L. A 65-year-old person who has an abnormal two-hour postprandial blood glucose value should go to the hospital and ask the doctor to make a judgment.