Fasting 6.8 generally refers to fasting blood glucose 6.8mmol / L, does not necessarily belong to diabetes, need to be combined with other blood glucose indicators and clinical symptoms of the doctor’s comprehensive judgment. Fasting blood glucose 6.8mmol/L alone can not be judged. The diagnosis of diabetes requires fasting blood glucose of 7mmol/L and above, and accompanied by symptoms of excessive eating, drinking, urination and weight loss can be diagnosed. Usually fasting blood glucose 6.8mmol/L, patients are recommended to complete the glucose tolerance test to clarify whether they have diabetes. Diet and exercise therapy can usually be considered first. When the blood sugar control is not good, metformin tablets and glimepiride can be considered as hypoglycemic treatment. Fasting blood glucose 6.8mmol/L, it is recommended to consult the endocrinology department, under the guidance of the doctor for treatment.