Pre-meal blood glucose of 8.74mmol/L and glycosylated hemoglobin of 6.5% indicate that the blood glucose is above the normal range, considering the possibility of diabetes mellitus, and it is recommended to take hypoglycemic drugs under the guidance of a doctor for treatment. Normal postprandial blood glucose level should be less than 7.8mmol/L, while preprandial blood glucose is 8.7mmol/L, suggesting high blood glucose. Glycated hemoglobin reflects the average blood glucose level in 3 months, and the normal level is 4%~6%. Glycated hemoglobin of 6.5% proves that the blood glucose is persistently high, and it is considered that it may be diabetes mellitus. In this case, you should take metformin, glipizide and other drugs under the guidance of a doctor to control blood sugar, and at the same time in life, you should also control the diet and adhere to the exercise, auxiliary hypoglycemic treatment. Abnormal blood glucose is recommended to be diagnosed and treated under the guidance of a doctor, not self-medication.