The normal value of blood glucose two hours after a meal is less than 7.8 mmol/L. Two-hour postprandial blood glucose generally refers to the blood glucose concentration measured after two hours from the beginning of eating, and the normal range should be less than 7.8mmol/L. If the two-hour postprandial blood glucose is greater than or equal to 11.1mmol/L and there are typical symptoms of diabetes, then the diagnosis of diabetes mellitus can be reached. In daily life, diabetic patients should follow the doctor’s instructions to take drugs such as acarbose, metformin or insulin injections, strengthen dietary control, appropriate exercise to control blood glucose concentration, and control fasting and two-hour postprandial blood glucose within a reasonable range, which can help avoid the occurrence of diabetic complications. You should go to the hospital when abnormal blood glucose values occur.