The normal range of fasting blood glucose for non-diabetic older adults over the age of 60 is between 3.9 and 6.1 mmol/L, and the normal range of 2-hour postprandial blood glucose should be less than 7.8 mmol/L. Glucose standards for older adults with diabetes may vary. Fasting blood glucose refers to the blood glucose concentration measured when there is no food for at least 8~10 hours, the normal range of fasting blood glucose for elderly people over 60 years old is between 3.9~6.1mmol/L; 2-hour postprandial blood glucose is the blood glucose concentration after 2 hours from the beginning of eating, and normal 2-hour postprandial blood glucose should be less than 7.8mmol/L. The blood glucose standard of elderly diabetic patients will be different. The blood glucose standard for elderly diabetic patients will be different, for newly diagnosed, low risk of hypoglycemia, short duration of the disease, the application of non-insulin agonist glucose-lowering drug therapy, good self-care ability of elderly diabetic patients fasting blood glucose to maintain between 4.4~7.0mmol/L, 2 hours after meal blood glucose should be less than 10mmol/L. In case of abnormal blood glucose value, it is recommended to go to the hospital and ask the doctor to make a judgment.