Normal glycated hemoglobin ranges from 4.0% to 6.0%, and diabetic patients generally need to be controlled below 7.0%. Glycated hemoglobin is produced by combining glucose and hemoglobin in the blood and can reflect the average blood glucose concentration of the body in the past 2~3 months. It can be combined with fasting blood glucose, 2-hour postprandial blood glucose and other indicators to comprehensively assess the situation of blood glucose. Normal glycosylated hemoglobin ranges from 4.0% to 6.0%, and diabetic patients generally need to be controlled below 7.0%, and also need to set up glucose control goals according to their individual conditions. If abnormal glycosylated hemoglobin occurs, it is recommended to consult a doctor for timely treatment.