Glucose is 6.22 generally refers to blood glucose 6.22 mmol / L. If it is two hours after the meal blood glucose, generally do not need to take medication. If it is fasting blood glucose, which has exceeded the normal range, it is recommended to combine with other examination indicators and decide whether medication is needed under the guidance of a doctor. The normal range of fasting blood glucose is 3.9~6.1mmol/L, blood glucose 6.22mmol/L has exceeded the normal range of fasting blood glucose, if at the same time two hours after meal blood glucose is normal, the blood glucose 6.22mmol/L belongs to the impaired fasting blood glucose. Patients with impaired fasting blood glucose are generally controlled by diet first, such as controlling total calorie intake, maintaining a low-sugar, low-fat diet, etc. as well as with appropriate exercise to reduce blood glucose, and if the blood glucose continues to not fall, medication can be taken as prescribed by the doctor. The normal range of two-hour postprandial blood glucose should be less than 7.8mmol/L, while blood glucose 6.22mmol/L is within the normal range, usually do not need to use medication. It is advisable to visit a hospital and ask your doctor to make a judgment if you have abnormal blood glucose values.