A 2-hour postprandial blood glucose that is more than 10 points higher than mmol/L suggests that the patient’s current blood glucose value may be 17.8 mmol/L or higher. Because the value of blood glucose 2 hours after meal is less than 7.8 mmol/L in normal people, if it is greater than or equal to 11.1 mmol/L, it indicates that the patient has diabetes. If the blood sugar of 2 hours after meal is higher than 10 points more than mmol/L, you need to seek medical attention in time: 1. Check urine ketone body and oral glucose tolerance test: Go to the hospital immediately to check urine ketone body and observe whether ketosis has occurred. If ketosis occurs, the pH of blood should be checked to see if ketoacidosis has occurred. If ketoacidosis occurs, immediate rehydration, insulin treatment and active correction of electrolyte disorders should be performed under the advice of the doctor, and some alkaline drugs should be applied if necessary. At the same time, oral glucose tolerance test should be done to clarify the change of blood glucose value and confirm the diagnosis of diabetes. 2. Check blood culture and drug sensitivity test: Infection easily occurs when blood glucose exceeds 17.8mmol/L. Patients should be checked in detail whether urinary tract infection, lung infection, skin infection, etc. Blood culture should be done if necessary, and drug sensitivity test should also be done to clarify the appropriate antibiotics. 3. Control diet, Proper exercise, reasonable medication: If the patient has neither diabetic ketoacidosis nor infection, but simply has a postprandial blood sugar that is more than 10 points higher than mmol/L, observe whether the patient has daily regulation. If a diabetic patient does not have dietary control and does not exercise appropriately, the blood glucose will be extremely elevated. Patients are advised to exercise overall control of daily calorie intake according to medical advice, avoid high sugar and high calorie foods, exercise appropriately, and take glucose-lowering medications such as metformin hydrochloride extended-release tablets and acarbose tablets on time and in the right amount. Try to control fasting blood sugar within 7.5mmol/L and 2 hours after meal within 8.5mmol/L to reduce the appearance of various acute complications of diabetes and delay the occurrence and development of chronic complications of diabetes.