Blood sugar 8.0mmol/L, if it is fasting blood sugar, it is recommended to take medication, the choice of drugs can use long-acting sulfonylurea hypoglycemic drugs, the representative drugs are gliclazide, glimepiride, glipizide and other drugs, as well as the use of metformin extended-release tablets for glucose-lowering treatment, and also need to use acarbose to control blood sugar. If the blood sugar 8.0mmol/L is two hours after meal, it is abnormal of glucose tolerance, so you can temporarily not use the drugs to lower the sugar, first of all, control the diet, control the blood sugar by low sugar diet, lose weight, strengthen physical exercise, etc., and also pay attention to monitor the blood sugar.