Diabetic patients two hours after meal blood glucose 13.8mmol / L is not normal, diabetic patients two hours after meal blood glucose is generally required to control in <10mmol / L. Normal people two hours after meal blood sugar should be below 7.8mmol / L, while the standard for diabetic patients is below 10mmol / L. Therefore, if the two hours after meal blood sugar is high, it is not normal. Therefore, if the two-hour postprandial blood glucose is high, the first step is to actively manage diet and exercise and monitor blood glucose, and change the oral medication and insulin treatment program under the guidance of the doctor. 1. Diet and exercise management: Diet should be timed daily, giving priority to buckwheat and other coarse grains with a low glycemic index, half an hour after meals, moderate exercise, jogging, brisk walking, swimming, etc. can be. 2. Drugs and insulin: dietary management is difficult to meet the standard case should be consulted as soon as possible, adjust the oral medication and insulin treatment program, such as the addition of acarbose, reglaneride, etc., should consult a physician to guide the use. Therefore, diabetic patients with abnormal two-hour postprandial blood glucose of 13.8 mmol/L should actively seek medical attention and change their glucose-lowering regimen if necessary.