High hba1c refers to high glycated hemoglobin, which may be caused by the increase of blood glucose due to the patient’s substandard blood glucose control in the past 2 to 3 months. High glycated hemoglobin may be caused by the patient’s lack of strict dietary control, low exercise, and unsatisfactory use of hypoglycemic drugs in the past 2 to 3 months, resulting in increased fasting and two-hour postprandial blood glucose, and the appearance of high glycated hemoglobin. High glycated hemoglobin suggests that patients should pay attention to physical care. Patients with high glycosylated hemoglobin should strictly control their diet, take appropriate exercise, and take hypoglycemic drugs (such as metformin, etc.) as prescribed by the doctor to improve the situation, and after one or two weeks of adjustment, further blood glucose measurements can be taken. Specific drugs should be taken correctly under the guidance of a doctor to avoid adverse reactions to self-medication. Pay attention to the daily diet, eat less food with high sugar content, and carry out reasonable health care appropriately.