Fasting blood glucose 6.8mmol/L in diabetic patients does not have the statement of whether it is normal or not, fasting blood glucose 6.8mmol/L suggests that blood glucose control is fair, different diabetic patients have different blood glucose targets. Normal fasting blood glucose is 3.9-6.1mmol/L, general diabetic patients fasting blood glucose should be controlled between 4.4-7.0mmol/L, diabetic patients fasting blood glucose 6.8mmol/L suggests that blood glucose control is fair. Young, new-onset diabetic patients with no complications should have tighter glycemic control. In addition to monitoring fasting blood glucose, two-hour postprandial blood glucose monitoring should be recommended. Diabetic patients need to pay attention to dietary control and appropriate exercise, take medication regularly, set blood glucose targets under the guidance of a doctor, and seek medical attention if there is any blood glucose abnormality.