Normal people with fasting venous blood glucose 3.9~6.1mmol/l, fasting venous blood glucose 6.17mmol/l, need to fasting 8 hours to recheck the fasting blood glucose and glycated hemoglobin level, still have abnormalities need to carry out a glucose tolerance test, assessment of pancreatic islet function, according to the level of blood glucose and pancreatic islet function, to determine the next step of the treatment program. 1. If the patient’s rechecked blood glucose, glycosylated hemoglobin or glucose tolerance test and pancreatic islet function are all in the normal range, no special treatment is needed for the time being. 2. If the patient is considered to be pre-diabetic after reviewing blood glucose, blood glucose can be adjusted through lifestyle, including appropriate diet control, exercise, weight loss if obese, and metformin treatment can be chosen if there is insulin resistance without contraindications. 3. If the review of blood glucose or glycated hemoglobin level reaches the diagnostic standard of diabetes mellitus, and there are typical symptoms of diabetes mellitus, can be diagnosed with diabetes mellitus, then in addition to lifestyle interventions, if necessary, given to glucose-lowering drug therapy. Therefore, fasting blood glucose 6.17mmol/l need to pay attention to, timely consultation endocrinology, review blood glucose and other related results to determine the next step in the treatment program.