Higher 3-hour blood glucose than 2-hour blood glucose is related to irrational diet and reduced efficacy of hypoglycemic drugs, etc. It is recommended to consult a doctor. 1. Unreasonable diet: If the patient’s diet structure is unreasonable, eating a lot of protein, fried food and other food that is not easy to digest and absorb, its metabolism in the body is relatively slow, and it is easy to appear that the 3-hour postprandial blood glucose is higher than the 2-hour blood glucose. 2. Slow down the effect of hypoglycemic drugs: After taking oral hypoglycemic drugs (e.g., Acarbose), the postprandial blood glucose control is good, but due to the problem of concentration and time of the drug, the effect of the drug is weakened after 3 hours, the blood glucose increases relatively, and the 3-hour glucose is higher than the 2-hour blood glucose. In daily life, it is recommended to strictly control the diet, mainly low-salt, low-fat and low-sugar diet, and appropriately increase the amount of exercise after meals. If any discomfort or abnormality occurs, it is necessary to consult a doctor in time for scientific diagnosis and treatment.