Fasting blood glucose 10.5mmol / L belongs to the fasting blood glucose is obviously elevated, more serious, you should go to the hospital in time for relevant examination, clear cause for treatment. Under normal circumstances, the adult fasting blood glucose value of 3.9 ~ 6.1mmol / L, fasting blood glucose value of 10.5mmol / L is obviously out of the normal range. If there are typical symptoms of “three more and one less” (drinking, urinating and eating more, and weight loss) plus the presence of venous plasma glucose ≥11.1mmol/L or fasting glucose ≥7.0mmol/L at any time of the day, or glucose ≥11.1mmol/L 2 hours after OGTT, the diagnosis of diabetes can be made. A diagnosis of diabetes can be made. If the fasting blood glucose is 10.5mmol/L during diabetes treatment, it means that the blood glucose control is not good, and the treatment program needs to be adjusted, such as co-administration of hypoglycemic drugs or increasing the insulin dosage. Abnormal blood glucose, must go to the regular hospital, under the guidance of the doctor, regulate the diet, reasonable hypoglycemic treatment.