The normal range of fasting blood glucose for people aged 50 years is 3.9 to 6.1 mmol/L, and 2-hour postprandial blood glucose is less than 7.8 mmol/L. For patients who have been diagnosed with diabetes mellitus, the fasting blood glucose is 4.4 mmol/L to 7.0 mmol/L, and non-fasting blood glucose is not more than 10.0 mmol/L, and it is necessary to set up a goal of controlling glucose according to the individual’s situation. Clinically, the normal range of fasting blood glucose is 3.9 to 6.1mmol/L, and 2-hour postprandial blood glucose is normal less than 7.8mmol/L. For patients who have been diagnosed with diabetes, the glucose control goal is generally 4.4mmol/L to 7.0mmol/L for fasting blood glucose, and no more than 10.0mmol/L for non-fasting blood glucose. For diabetic patients aged 50 years with risk of hypoglycemia, complications, and concomitant diseases, the glucose control goal can be appropriately relaxed. Abnormal blood glucose values are recommended to visit the hospital.