The cause of 3-hour postprandial blood glucose greater than 2-hour blood glucose needs to be clarified. If it is caused by delayed absorption in the gastrointestinal tract, medication is usually not needed to lower blood glucose; if it is caused by eating too much hard-to-digest food or diabetes mellitus, etc., it should be targeted to improve these causes. Generally people’s postprandial blood glucose peak occurs in 0.5-1 hour. If the patient has chronic gastritis, chronic enteritis and other diseases that cause poor digestion and absorption, the peak of blood glucose can be delayed, and the 3-hour postprandial blood glucose value is higher than the 2-hour postprandial blood glucose value, and should be treated with medication under the guidance of a doctor to address the cause of the disease. If you eat too much food that is difficult to digest, such as full-fat food or high-fat fried and barbecued food, as the digestion time of these foods is longer, the arrival of the peak of blood glucose will be delayed accordingly, and the 3-hour postprandial blood glucose value will be higher than the 2-hour postprandial blood glucose value. In this case, the diet should be adjusted to minimize the consumption of high-fat foods that are difficult to digest. In addition, diabetes may also have a delayed blood glucose peak, in which case it is necessary to adjust the lifestyle, improve diet, appropriate exercise, and apply hypoglycemic drugs under the guidance of a doctor. If the symptom of 3-hour postprandial blood glucose value being higher than 2-hour postprandial blood glucose value persists without relief, please consult a doctor promptly to find out the cause and dispose of it.