A glycosylated hemoglobin of 7.1% indicates the possibility of diabetes and is a condition of poor glycemic control. Glycated hemoglobin is the product of a slow, continuous, non-enzymatic reaction of hemoglobin A with glucose during the survival of red blood cells. Once formed, it does not dissociate and is not affected by temporary increases in blood glucose. Glycated hemoglobin is therefore of special diagnostic value in hyperglycemia, especially when there are large fluctuations in blood glucose and urinary glucose. The reference value of glycosylated hemoglobin is generally 4%~6%, and its level and production are proportional to the blood glucose concentration, which can reflect the average blood glucose level in the last 2~3 months. Glycated hemoglobin level ≥6.5% can be used as one of the diagnostic criteria for diabetes mellitus, if diabetes mellitus, such as glycated hemoglobin <7%, indicating that the diabetes mellitus is under good control; such as >7%, suggesting that poor glycemic control in the last 2-3 months, the higher the value, the higher the blood glucose level; such as >10%, suggesting that the condition is serious, the prognosis is poor. Therefore, glycated hemoglobin 7.1% indicates that there is a possibility of diabetes mellitus, and belongs to the situation of poor glycemic control, it is recommended to go to the hospital for a clear diagnosis in a timely manner, and strictly comply with the doctor’s instructions for treatment, so as to get a better control of blood glucose.