Fasting blood glucose value of 13.3 mmol/L has reached the diagnosis of diabetes mellitus, if the diagnosis of diabetes mellitus is required treatment. Diagnostic criteria for diabetes mellitus: Fasting blood glucose ≥ 7.0 mmol / L, or 2 hours after the sugar load blood glucose ≥ 11.1 mmol / L, or random blood glucose ≥ 11.1 mmol / L, accompanied by three more and one less symptom (drinking, eating, urinating, and weight loss), can be diagnosed with diabetes mellitus. Fasting blood glucose ≥7.0 mmol/L or two-hour postprandial blood glucose ≥11.1 mmol/L monitored twice on non-same day without symptoms of diabetes is also considered diagnostic of diabetes. A fasting blood glucose value of 13.3 mmol/L has reached the diagnosis of diabetes and requires prompt treatment. The strategy for treating diabetes is comprehensive and includes lifestyle management, blood glucose monitoring, diabetes education, and the use of hypoglycemic drugs. If the fasting blood glucose value is 13.3mmol/l, it is recommended to actively go to the endocrinology department of regular hospitals for further improvement of OGTT, glycated hemoglobin, pancreatic islet function and other tests to guide the next step of treatment.