Postprandial glucose 9.7mmol/L belongs to abnormal glucose tolerance, abnormal glucose tolerance is higher than normal blood glucose, but does not reach the diagnosis standard of diabetes, because the normal two-hour postprandial blood glucose is in 4.4-7.8mmol/L, two-hour postprandial blood glucose >11.1mmol/L is diabetes, so postprandial glucose 9.7mmol/L belongs to abnormal glucose tolerance. In this case, it only needs to be controlled by diet plus exercise. The usual diet requires attention, very sweet things such as longan, lychee, grapes, red dates, bananas, etc. Do not eat, and then can not drink porridge, usually after eating to go for a walk. It is best to eat some cereal for breakfast, and you can eat some coarse grains at noon and at night, because the absorption of coarse grains is not so fast, so the rise of blood sugar will not be particularly fast. In the case of abnormal glucose tolerance, you only need to go to the hospital once every six months to a year for a review.