Postprandial blood glucose 10.5mmol/L first need to clarify how long after the meal, if the blood glucose is 1 hour after the meal, it is not high; if the blood glucose is 2 hours after the meal, it is more than the normal range. It is recommended to consult a doctor. 1. Normal people: 1 hour after meal corresponds to a blood glucose value of 6.7~9.4mmol/L, up to 11.1mmo/L; 2 hours after meal blood glucose value should be <7.8mmol/L. Postprandial blood glucose 10.5mmol / L, if the 1-hour postprandial blood glucose, in the normal range, not high; if the 2-hour postprandial blood glucose, is a high range. 2. Diabetic patients: diagnosed diabetic patients, follow the medical advice standardized injection of insulin, oral acarbose, glimepiride and other hypoglycemic drug therapy, two hours after meals blood glucose should be controlled within 10 mmol / L. The patient's blood glucose 2 hours after meals blood glucose is not high, it is not high. The patient's 2-hour postprandial blood glucose 10.5 mmol/L is high. It is recommended that the patient go to the hospital in time to avoid delay.