Impaired fasting glucose tolerance mainly refers to patients who are found to have fasting blood glucose over 6.1mmol/L but less than 7mmol/L when they undergo glucose tolerance test, and blood glucose within this range is called high fasting glucose or impaired fasting glucose. These two drugs have been proven to have a good early intervention effect on early impaired glucose tolerance in China, including the “International Authoritative Diabetes Guidelines”. After patients are treated with the two drugs, many patients’ blood glucose will return to the normal range, that is, within 3.9-6.1 mmol/L.