A fasting blood glucose of 6.56 mmol/L is considered high, but does not meet the diagnostic criteria for diabetes. A normal person’s fasting blood glucose should be between 3.9 and 6.1 mmol/L. When the fasting blood glucose is greater than or equal to 6.1 mmol/L but less than 7.0 mmol/L and the 2-hour post glycemic load blood glucose is less than 7.8 mmol/L, it suggests impaired fasting blood glucose. Treatment measures: 1. Strengthen dietary management, timed and rationed staple food for each meal, less starchy food such as porridge and noodles, etc. Drinks, sugar cubes and other overly sweet food are not recommended. 2. Increase the amount of exercise and exercise moderately for half an hour after each meal. If the blood glucose is still difficult to meet the standard, then you should actively consult the doctor, improve the oral glucose tolerance test to assess the condition of pancreatic islet function, and choose the positive intervention measures as early as possible to avoid progressing to diabetes. Therefore, fasting blood glucose of 6.56mmol/L is considered high, and it is recommended to actively consult a doctor and choose the appropriate treatment measures under the guidance of the doctor.