Fasting blood sugar of 6.5 mmol/L usually requires treatment. The normal range of fasting blood glucose is 3.9~6.1mmol/L, and a fasting blood glucose of 6.1~7.0mmol/L is considered impaired fasting blood glucose, so a fasting blood glucose of 6.5mmol/L is considered impaired fasting blood glucose. These patients should lower their blood glucose through dietary control and appropriate exercise, such as controlling the total calorie intake according to the patient’s weight, height and activity level, avoiding foods high in sugar and fat, and taking appropriate physical exercise, such as jogging, brisk walking, jumping rope, etc.; all of the above methods will help to achieve the purpose of controlling blood glucose. If blood glucose cannot be controlled after lifestyle intervention, it is necessary to consider the use of hypoglycemic drugs, such as insulin, metformin and so on. In case of abnormal blood glucose value, it is recommended to go to the hospital and ask the doctor to make a judgment.