Morning fasting blood glucose 6.8 mmol / L, belongs to the high range, if the patient’s glucose tolerance test results and 2 hours after meal blood glucose is normal, can be controlled by diet and exercise treatment. If the glucose tolerance test results are abnormal and the 2-hour postprandial blood glucose exceeds the normal value, general measures to regulate, as well as drug therapy are needed. The normal value of fasting blood glucose is 3.9~6.1mmol/L, so the morning fasting blood glucose value of 6.8mmol/L exceeds the normal range, which is on the high side. It is recommended that patients can do glucose tolerance test and 2 hours postprandial blood glucose test, if the patient but the glucose tolerance test results and 2 hours postprandial blood glucose is normal, you can not be treated, but to adjust the daily diet, usually eat less candy, candied fruit and other foods with high sugar content, and appropriate exercise. If the patient’s glucose tolerance test is abnormal and the 2-hour postprandial blood glucose is more than normal, it is mostly considered to be caused by diabetes mellitus. Patients need to be regulated by diet and exercise under the guidance of a doctor, and if necessary, insulin, metformin and other hypoglycemic drugs can be used as prescribed by a doctor. Morning fasting blood sugar 6.81mmol / L is high, the patient needs to consult a doctor in time, the doctor will be based on the cause of elevated blood sugar to choose the appropriate measures for treatment.