Fasting blood sugar 7.4mmol / L if accompanied by diabetic symptoms, can be diagnosed as diabetes, usually need to take medication to lower blood sugar, should be under the guidance of a doctor to take drugs. Fasting blood glucose 3.9-6.0mmol/L is normal, 6.1-6.9mmol/L is impaired fasting blood glucose regulation, ≥7.0mmol/L can be diagnosed as diabetes when accompanied by diabetic symptoms. So fasting blood glucose 7.4mmol/L, at the same time have more drinking, eating, urinating, weight loss and other symptoms can be diagnosed as diabetes. After diagnosed as diabetes, it should be treated promptly with oral hypoglycemic drugs, such as metformin and acarbose. Fasting blood glucose 7.4mmol/L should seek medical treatment in time to clarify the diagnosis and choose appropriate medication.