Fasting blood glucose 8.1mmol/L in diabetic patients is slightly above the upper limit of the control target range and is generally abnormal. Diabetic patients with blood glucose control standards, for most diabetic patients, the general control index is fasting blood glucose 4.4 ~ 7.0mmol / L, so fasting blood glucose 8.1mmol / L is elevated, it is recommended to consult with a professional doctor to adjust the glucose-lowering program. Diabetic patients should follow the doctor’s instructions, standardize the use of medication, regular monitoring of fasting blood glucose and postprandial 2 hours of blood glucose, if you find that the blood glucose control does not meet the standard, you should go to the endocrinology department of the regular hospital as soon as possible, so as to avoid delays in the condition, resulting in serious consequences.