Whether 2-hour postprandial blood glucose 8.5mmol/L is normal or not is judged by different criteria depending on the population. For the general population, 2-hour postprandial blood glucose 8.5mmol/L is not normal; for diabetic patients, 2-hour postprandial blood glucose 8.5mmol/L suggests better control. 1. General population: normal 2-hour postprandial blood glucose should be less than 7.8mmol/L, 2-hour postprandial blood glucose 8.5mmol/L, belongs to the reduced glucose tolerance, can do glucose tolerance test, glycated hemoglobin test and combined with the presence of polyuria, polydipsia, polyphagia, weight loss and other diabetic symptoms, to determine the diagnosis of whether there is diabetes. 2. Diabetic patients: 2-hour postprandial blood glucose 8.5mmol/L, suggesting better blood glucose control. 2-hour postprandial blood glucose 8.5mmol / L should be early to the hospital, under the guidance of a professional physician to assess the condition, and active treatment, so as not to delay the condition.