The 2-hour postprandial blood glucose of 8.1mmol/l is not considered serious. For people who have not been diagnosed with diabetes, it belongs to impaired glucose tolerance, taking timely and effective intervention may return to normal and not develop into diabetes; for diabetic patients, it belongs to glycemic control to meet the standard. Normal people should be less than 7.8mmol/l two hours after meal, two hours after meal blood glucose 7.8~11.1mmol/l, to be considered as impaired glucose tolerance, this situation is the pre-diabetes, need to pay attention to, but is not considered serious, to take timely and effective intervention may be restored to normal, and do not develop into diabetes. If diabetic patients, two hours after meal blood glucose need to control not more than 10.0mmol/l, so 8.1mmol/l belongs to the blood glucose control is good, can delay or avoid the occurrence of diabetic complications. Abnormal blood glucose is recommended to seek prompt medical attention.