If blood glucose cannot be controlled well by diet control and proper exercise, patients with glycated hemoglobin of 6.9% and fasting blood glucose of 7.18mmol/L need to consider taking medication or insulin injection under the guidance of a doctor. The normal value of glycated hemoglobin is 4%~6%, and the normal range of fasting blood glucose is 3.9~6.1mmol/L, so the glycated hemoglobin of 6.9% and fasting blood glucose of 7.18mmol/L are on the high side. And the fasting blood glucose value and glycated hemoglobin have reached the diagnosis of diabetes mellitus, it is recommended to further diagnose diabetes mellitus by combining with clinical symptoms and glucose tolerance test and other tests. Once diagnosed with diabetes mellitus, patients need to lower their blood glucose through dietary control and appropriate exercise. If the above methods are not effective, it is recommended to use oral hypoglycemic drugs such as metformin or insulin injection to lower blood glucose under the guidance of a doctor. In case of abnormalities in glycosylated hemoglobin and fasting blood glucose, it is recommended to go to the hospital and ask the doctor to make a judgment and give a treatment plan.