Blood glucose 6.3mmol/L, if it is fasting blood glucose, slightly higher than normal, can be restored to normal through dietary control and exercise; if it is random blood glucose or two-hour postprandial blood glucose, it is normal. Fasting blood glucose 6.3mmol/L, need to consider the impaired regulation of fasting blood glucose, belongs to the pre-diabetes, timely intervention is likely to return to normal. First of all, pay attention to diet control, can not eat greasy food, also can not eat high sugar content food, each meal should pay attention to regular quantitative, can not eat too much. At the same time, you can control blood glucose through exercise, especially obese people, it is necessary to pay attention to weight loss and weight control, because obese patients are prone to cause insulin resistance, which can lead to diabetes. If 6.3mmol/L is random terminal blood glucose or postprandial blood glucose, belongs to the normal blood glucose, is not need to control, of course, reasonable diet and exercise is also beneficial to the body. Blood glucose 6.3mmol / L recommended timely medical care, improve the relevant examination.