Glycated albumin mainly refers to glycated hemoglobin, which is an indicator used by most hospitals to check the latter to assess the blood sugar control in the recent period (3 months), and the usual fingertip blood sugar measurement can only reflect the high or low blood sugar at the moment of blood collection. Blood sugar can combine with hemoglobin in the blood to form glycated hemoglobin, because the half-life of glycated albumin is 2-3 months, so this index can reflect the average level of blood sugar control of patients in the recent 2-3 months. For assessing the effect of treatment generally together with glycated hemoglobin to determine the control of blood glucose, it is of great significance for predicting chronic complications of diabetes. However, it can not reflect the fluctuation of blood sugar, some people have more fluctuation of blood sugar, but this indicator does not reflect it.