Glycated hemoglobin 6.2% suggests that there is an elevated problem, and does not exclude the possibility of diabetes. The normal range of glycosylated hemoglobin is 4%~6%, 6.2% is abnormal value, it is recommended to further improve the fasting blood glucose, postprandial 2 hours blood glucose and other tests, to clarify whether there is any blood glucose abnormality. Glycated hemoglobin can reflect the average level of the patient’s blood glucose in the last 2~3 months, and the normal value is between 4%~6%. Typical clinical manifestations of diabetes mellitus, such as polydipsia, polyphagia, polyuria, fatigue and emaciation “three more and one less” symptoms, coupled with glycosylated hemoglobin ≥ 6.5% can be diagnosed as diabetes mellitus. When the glycosylated hemoglobin level increases, it is recommended to further evaluate the fasting blood glucose, two-hour postprandial blood glucose level, and the clinical symptoms of diabetes to determine whether the patient has diabetes. It is recommended to consult the endocrinology department of a regular hospital when an elevated glycosylated hemoglobin level is detected.