Diabetes mellitus fasting blood glucose 8~9mmol/L is considered high, the normal value of fasting blood glucose is 3.9~6.1mmol/L. When the fasting blood glucose ≥7.0mmol/L, together with the typical symptoms of diabetes mellitus, diabetes mellitus should be considered. Therefore, timely treatment should be carried out, including medical nutrition therapy, exercise therapy and drug therapy. 1. Medical nutrition therapy: also known as diet therapy, is the basis of diabetes treatment, should be reasonable control of total calories, pay attention to the distribution of nutrients. 2. Exercise therapy: Exercise can increase the sensitivity of insulin, and the formulation of exercise plan should follow the principle of individualization, gradual progress and long-term persistence. 3. Drug therapy: it includes oral drugs and injection preparations. Drug therapy includes sulfonylureas such as glibenclamide, biguanides such as metformin, and α-glucosidase inhibitors such as acarbose. Injectable preparations, such as insulin, are an important and effective means of controlling high blood sugar. If you have diabetes, you should be treated under a doctor’s supervision.