Post-meal blood glucose generally refers to two hours after meals, two hours after meals, blood glucose 9mmol / L is not normal, high; but for diabetic patients usually belong to the control of sugar standard, is normal. If you refer to other time points of blood glucose also need to be analyzed on a case-by-case basis. Two-hour postprandial blood glucose normal should be less than 7.8mmol/L, so two-hour postprandial blood glucose 9mmol/L is high, but does not meet the diagnostic criteria for diabetes mellitus (≥11.1mmol/L), belong to the glucose tolerance abnormalities, i.e., pre-diabetic, can be through dietary control, appropriate exercise and other ways to reduce blood glucose, it may be possible to return to normal. For diabetic patients, the goal of glycemic control is generally non-fasting blood glucose does not exceed 10.0mmol/L, so the blood glucose of 9mmol/L after meals is normal, which belongs to glycemic control to reach the standard, but also need to set glycemic control goals according to individual circumstances. Patients with abnormal blood glucose values are advised to go to the hospital.