A fasting blood sugar of 6.7 mmol/L is not normal. The normal range of fasting blood glucose is 3.9~6.1mmol/L, more than this range, it means high fasting blood glucose. Fasting blood glucose 6.7mmol/L belongs to the impaired fasting blood glucose, should actively adjust the life and diet habits and habits of life and work and rest, such as scientific diet, small amount of meals, less sugary drinks or avoid staying up all night, overwork and so on. At the same time, it is recommended that the patient further improve the two-hour postprandial blood glucose, if the two-hour postprandial blood glucose is greater than or equal to 11.1mmol/L, the diagnostic criteria for diabetes mellitus, if at the same time there is a typical symptom of diabetes mellitus, diabetes mellitus is considered, and can be taken under the direction of the doctor oral hypoglycemic treatment, such as metformin hydrochloride tablets and so on. If the patient’s blood glucose is abnormal, it is recommended that the endocrinology department of the regular hospital for consultation and standardized treatment under the guidance of the doctor.