Suggestion: Analysis of illness: Hello, the normal blood glucose level two hours after meals is generally below 7.8 and above 3.9. Introduction: The blood glucose test two hours after meals is actually a simplified glucose tolerance test. Compared with oral glucose tolerance test, this method is simple and easy to be accepted by patients, and it is the most commonly used method to screen and find diabetic patients with normal fasting blood sugar in clinic. Measuring blood sugar 2 hours after meals has two meanings, one is for diagnosis, and the other is to observe the recovery of glucose tolerance, thus reflecting the functional state of islets. If after a period of treatment, fasting blood glucose has returned to normal, but postprandial blood glucose is still high, it often indicates that the patient's glucose tolerance is still poor and insulin secretion is still delayed. If the fasting blood glucose is normal and the postprandial blood glucose is normal, it shows that the patient's glucose tolerance function is better and the islet function is improved.