A little high blood glucose does not necessarily mean diabetes. It is necessary to determine whether the degree of elevated blood glucose meets the diagnostic criteria for diabetes. The requirement of blood glucose in the diagnosis of diabetes is that the patient’s blood glucose is >7.0mmol/l in fasting state, or >11.1mmol/l in OGTT 2h or >11.1mmol/l in random blood glucose. the blood glucose measured refers to the intravenous blood glucose taken at the hospital, not the fingertip blood glucose measured. If there is a problem with the fingertip blood glucose, it is best to go to the hospital to take further intravenous blood glucose to confirm whether the patient has diabetes. If diabetes is diagnosed, regular diet control, exercise and medication will be required.