Glycosylated hemoglobin 6.7% can be legal to return to normal, but diabetes cannot be recovered. Glycated hemoglobin is an indicator of the level of blood sugar control over the past 2-3 months. In general, the reference range of glycosylated hemoglobin in healthy people is about 4%-6%. Glycated hemoglobin is used internationally as a diagnostic indicator for diabetes mellitus, with ≥6.5% as the general cut-off point. Patients with diabetes should have a glycated hemoglobin of <7%. If the glycosylated hemoglobin is 6.7%, diabetes mellitus needs to be considered, and it is recommended to improve the glucose tolerance test to make a clear diagnosis. With a glycated hemoglobin of 6.7%, exercise and dietary control can be used to control blood glucose levels, and hypoglycemic drugs should be used for treatment if necessary, so as to return the glycated hemoglobin to normal. It is recommended that patients maintain a good attitude, strengthen exercise, avoid overeating, follow the doctor's instructions for reasonable use of medication, and do a good job of blood glucose monitoring.