Three-hour postprandial blood glucose 7.0 mmol / L is generally abnormal, should also be combined with fasting blood glucose, 2 hours after meals blood glucose comprehensive judgment. However, for diabetic patients, it is normal, belonging to the sugar control standard. Under normal circumstances, three to four hours after meals, blood sugar should be close to fasting blood sugar. And fasting blood sugar 3.9 to 6.0 mmol/L is normal. Therefore, three-hour postprandial blood glucose 7.0mmol/L may not be normal, the clinical use of fasting blood glucose and two-hour postprandial blood glucose as an assessment indicator, it is recommended to improve the relevant examination. For diabetic patients, the goal of glycemic control is generally in the fasting blood glucose 4.4mmol/L ~ 7.0mmol/L, non-fasting blood glucose does not exceed 10.0mmol/L, so the three-hour postprandial blood glucose of 7.0mmol/L is normal, which belongs to the glycemic control of the standard. If you have abnormal blood glucose values or are suspected of having diabetes-related symptoms, it is recommended that you go to the hospital and ask your doctor to make a judgment.