Glycated hemoglobin 6.4% does not necessarily require medication. Glycated hemoglobin is the product of non-enzymatic glycosylation of glucose in the blood with hemoglobin in red blood cells, which have a life span of 120 days. Therefore, glycated hemoglobin is an indicator that represents the average blood glucose level of the past 2-3 months, and the normal value of glycated hemoglobin is 4%-6%. With reliable laboratory methods, diabetes mellitus can be diagnosed when the glycated hemoglobin is > 6.5%, diabetes is diagnosed. Therefore, glycated hemoglobin 6.4%, suggesting that the blood sugar level has exceeded the normal value, but does not necessarily meet the diagnostic criteria for diabetes, so it is not necessarily necessary to take medication, but you need to do the following: 1, monitoring fasting and 2 hours postprandial glucose, the current diagnosis of diabetes is still recommended to fasting and 2 hours postprandial glucose, or oral glucose tolerance test glucose as a criterion. 2, the need to be Diabetes diet and exercise treatment, glycated hemoglobin 6.4% of patients, although not necessarily diagnosed as diabetes, but suggests that blood glucose has exceeded the normal value, as long as the blood glucose exceeds the standard, you need to be diabetes diet and exercise treatment, in order to delay the progression of diabetes. 3, the need for regular rechecking of fasting and postprandial 2 hours of glucose, as well as glycated hemoglobin. However, in patients with treated diabetes, a glycosylated hemoglobin of 6.4% indicates fair glycemic control, and the current regimen can be continued.