Before meals blood glucose is normal after meals high whether need to treat need to further go to the hospital, need to first clarify whether there is diabetes, can be clarified through the oral glucose tolerance test, clear that there is diabetes before the need to use drugs to treat. Fasting blood glucose is normal, oral glucose tolerance test 2 hours blood glucose is 7.8~11.1mmol / L, belongs to the glucose tolerance is reduced, can not be diagnosed as diabetes, but it is easy to develop into diabetes, at this stage, generally through improving the lifestyle, such as eating small meals, do not eat too much greasy food, strengthen the exercise, etc., to control the blood glucose elevation. If the oral glucose tolerance test 2-hour blood glucose is greater than or equal to 11.1 mmol / L, and there are typical symptoms of diabetes, it is considered diabetes, for the premeal blood glucose is normal and high after meals can be used in accordance with the doctor’s instructions for the use of akarbose, reglaneride and other drugs that are conducive to lowering the postprandial glucose treatment. Therefore, patients with normal blood glucose before meals and high blood glucose after meals should go to the hospital in a timely manner to improve the examination and make a clear diagnosis and early treatment.