Human blood glucose is not a fixed value, it can rise due to physiological and pathological factors, and fluctuate according to the influence of self and external factors, so it is not possible to judge whether it is normal based on a certain value. It should be analyzed according to the time period of blood glucose tested by the patient and the patient’s own disease condition. First, the general population: 1, fasting: if fasting blood sugar > 6.1mmol/L is abnormal, because normal people fasting blood sugar 3.9-6.1mmol/L, if fasting blood sugar 6 points more than 6.1mmol/L, indicating impaired fasting blood sugar, belongs to the prediabetes, should be managed in accordance with the diabetic diet and exercise, to avoid turning into diabetes. The risk of diabetes will be higher if the patient belongs to a high-risk group, such as over 40 years old, obese, hypertensive, coronary heart disease, and hyperuricemia. Patients with a family history of diabetes will also have a much higher risk of developing diabetes than the general population. Should control the original disease, regular check-ups, to avoid affecting blood sugar; 2. After meal: If the blood sugar value is measured two hours after meal is more than 6 points, it belongs to the normal state. Normal people have blood sugar <7.8mmol/L two hours after meal, and the normal range is 4.4-7.8mmol/L, so blood sugar more than 6 points is the normal state. Second, diabetic patients: If you are a diabetic patient, fasting blood sugar or two hours after meal blood sugar control is more than 6 points belong to the normal state.