Glycated hemoglobin of 14% indicates that the level of blood glucose control in the last 2 to 3 months is very poor and usually requires hospitalization for regular treatment. Glycated hemoglobin reflects the blood glucose level in the last 2 to 3 months, with a normal value of 4% to 6%, and is commonly used clinically as a blood glucose monitoring indicator. Glycated hemoglobin of 14% represents a very high blood glucose level in the last 2 to 3 months and poor blood glucose control, which usually requires hospitalization and adjustment of the treatment plan. Otherwise, prolonged periods of significantly higher-than-normal glycosylated hemoglobin may lead to various diabetic complications, such as diabetic nephropathy, retinopathy, and diabetic neuropathy. Patients with abnormal glycosylated hemoglobin need to go to the hospital in time and be treated under doctor’s guidance.