Fasting blood glucose 4.9mmol/L can refine the 2-hour postprandial blood glucose, if the 2-hour postprandial blood glucose is less than 7.8mmol/L, no treatment is needed. If 2-hour postprandial blood glucose 7.8~11.1mmol/L, diet and exercise can be treated. If 2-hour postprandial blood glucose ≥11.1mmol/L on two non-simultaneous days is required medication. The normal range of fasting blood glucose is 3.9~6.1mmol/L, and fasting blood glucose 4.9mmol/L is a normal level. However, for Asians whose diet is based on carbohydrates, some of them have normal fasting blood glucose and high postprandial blood glucose, so it is still recommended to refine the 2-hour postprandial blood glucose, and the normal value is ≤7.8mmol/L. If two non-same day 2-hour postprandial blood glucose ≥11.1mmol/L or the presence of polyuria, polydipsia, polyphagia, weight loss symptoms, can be considered diabetes, should take hypoglycemic drugs, such as acarbose, metformin, etc., and the combination of diet and exercise therapy. There are blood sugar abnormalities should go to the hospital, under the guidance of the doctor’s treatment.