The standard range of fasting blood glucose for 70-year-olds is 3.9-6.1 mmol/L, and postprandial blood glucose should be less than 7.8 mmol/L, measured about 2 hours after a meal. Elderly people with fasting blood glucose over 6.1mmol/L or postprandial blood glucose over 7.8mmol/L 2h after meal are recommended to lower their blood glucose through dietary control as well as medication. Drugs can take metformin hydrochloride tablets and so on, the drug is not recommended for pregnant women to avoid nausea and other symptoms, need to take drugs under the guidance of a doctor. Elderly people should monitor blood glucose every 1-2 months, need to monitor fasting blood glucose and 2 hours after meals. Blood glucose that is physiologically elevated can be controlled by dietary modifications. The elderly in blood sugar control is more satisfactory, no cardiovascular and cerebrovascular complications, you can adhere to the appropriate exercise, but be careful not to exercise before meals. If the elderly have abnormal blood glucose need to consult a doctor in a timely manner, under the guidance of the doctor for treatment, do not self-medication, so as not to aggravate the condition.