Fasting blood glucose 8-9mmol/L has reached the diagnosis standard of diabetes, for this part of patients should first control the diet, high sugar-containing fruits, snacks, rice, drinks are not eaten, each meal after the appropriate activities according to their own situation. Fasting blood sugar 8-9mmol is the level of mildly elevated blood sugar, patients can take oral metformin for hypoglycemia treatment, if the post-meal blood sugar is also obviously high, you can take oral glycosidase inhibitors, such as acarbose and other drugs to reduce post-meal blood sugar. After effective diet control, exercise and treatment with glucose-lowering drugs, blood sugar can be easily controlled within the normal range.