Morning fasting blood glucose 6.3mmol/L is not normal, high; but for diabetic patients is normal, belongs to the sugar control standard. Morning fasting blood glucose 3.9-6.0mmol/L is normal, 6.1-6.9mmol/L is impaired fasting blood glucose regulation, ≥ 7.0mmol/L at the same time when diabetes symptoms can be diagnosed as diabetes. So the morning fasting blood sugar 6.3mmol / L is not normal, high, but has not yet reached the diagnostic criteria for diabetes, can be controlled by diet and appropriate exercise to reduce blood sugar, it is possible to return to normal. For diabetic patients, the goal of glycemic control is generally in the fasting blood glucose 4.4mmol/L ~ 7.0mmol/L, so the morning fasting blood glucose 6.3mmol/L belongs to the glycemic control standard. It is recommended to go to the hospital when abnormal blood glucose values occur.