Patients with fasting blood glucose 6.7mmol/L who have been diagnosed with diabetes mellitus are in compliance and do not need to be restored to normal; if diabetes mellitus has not been diagnosed, then the blood glucose can be restored to normal through dietary therapy and exercise therapy. 1. For patients who have been previously diagnosed with diabetes, the fasting blood glucose control target is 4.4~7.0mmol/L. Therefore, fasting blood glucose of 6.7mmol/L is up to the standard, and the current treatment program can be continued without the need to further lower the blood glucose. 2. For patients with undiagnosed diabetes mellitus, the normal range of fasting blood glucose is 3.9~6.1mmol/L. Therefore, fasting blood glucose of 6.7mmol/L is on the high side. Dietary aspects should control the total calories of food, rational distribution of nutrients, appropriate eating grains, such as sorghum, barley, oats, corn, etc., need to pay attention to low-sugar, low-fat diet. In terms of exercise, it is recommended to conduct appropriate aerobic exercise every day, such as running, brisk walking, swimming, etc. Appropriate exercise is good for blood glucose control. It is recommended that patients with fasting blood glucose of 6.7mmol/L should undergo standardized treatment under the guidance of a doctor. If the patient’s blood glucose does not return to normal after dietary treatment and exercise therapy, he or she needs to go to the hospital in time to avoid delaying his or her condition and triggering adverse consequences.