Either fasting blood glucose or two-hour postprandial blood glucose 14.7 mmol/L is above the normal blood glucose range and is more serious. Blood glucose 14.7mmol/L may be caused by stress factors such as acute infection, or diabetes, diabetic ketoacidosis and other factors. Targeted treatment is required under the guidance of a doctor, with medication including insulin. The normal range of fasting blood glucose is 3.9~6.1mmol/L, and the normal value of two-hour postprandial blood glucose should be less than 7.8mmol/L, so no matter whether it is fasting or two-hour postprandial blood glucose 14.7mmol/L is far beyond the normal range, which is more serious. Diabetes caused by blood glucose 14.7mmol / L need to follow the doctor’s instructions to inject insulin treatment or take acarbose, metformin and other hypoglycemic drugs, if complicated by ketoacidosis should be actively rehydration and insulin injection treatment. If it is acute bacterial infection caused by elevated blood glucose need to follow the doctor’s instructions to use anti-infective drugs, such as penicillin, cefuroxime and so on. Patients with blood glucose of 14.7mmol/L should go to the hospital in time, and ask the doctor to make a judgment and give a treatment plan.