A glycosylated hemoglobin test value of 6.9% is more serious. The normal value of glycosylated hemoglobin is 4%-6%, and glycosylated hemoglobin ≥6.5% can help to diagnose diabetes mellitus, and it is recommended to monitor both fasting and postprandial glucose, and improve the oral glucose tolerance test if necessary. For diabetic patients, it is recommended that glycosylated hemoglobin be controlled at less than 7%, so a glycosylated hemoglobin of 6.9% suggests that blood glucose control has been fair in the last 2-3 months, but it is still necessary to further monitor blood glucose and standardize glucose-lowering treatment. It is recommended that patients with a glycated hemoglobin of 6.9% go to the hospital in time to have their condition evaluated under the guidance of a doctor.