Blood sugar 6.22mmol / L is normal or not need to be divided into circumstances, fasting blood sugar 6.22mmol / L is high, two hours after meal blood sugar 6.22mmol / L is normal. The normal range of two-hour postprandial blood glucose should be less than 7.8mmol/L, so the two-hour postprandial blood glucose blood glucose 6.22mmol/L is normal. The normal range of fasting blood glucose is 3.9~6.1mmol/L, so the fasting blood glucose 6.22mmol/L is high, in the impaired fasting blood glucose (fasting blood glucose is 6.1~7.0mmol/L), the patients with impaired fasting blood glucose can recover the blood glucose through dietary control, appropriate physical exercise and other ways. It is recommended to go to the hospital and ask the doctor to make a judgment when abnormal blood glucose value occurs.