Whether a blood glucose value of 9.1 mmol/L two hours after a meal is high needs to be discussed in context. If it is normal, it is indeed high; if it is diabetic, it is within the control target. Blood glucose is the amount of glucose contained in the blood. The normal fasting blood glucose value is between 3.9mmol/L and 6.1mmol/L, and the normal blood glucose value two hours after a meal is less than 7.8mmol/L. The blood glucose value of a normal person two hours after a meal is 9.1mmol/L, which is already far beyond the normal value. If it is due to excessive intake of sugar during meals caused by transient high blood glucose, it can be improved by adjusting the diet, without too much treatment, pay attention to daily monitoring of blood glucose can be. Diabetic patients two hours after meal blood glucose is generally required to control at less than 10mmol / L, two hours after meal blood glucose 9.1mmol / L, belongs to within the control target, is generally not high. Two hours after the meal blood sugar value of 9.1mmol / L patients are recommended to go to the hospital in a timely manner, to clarify the cause of the disease, and then comply with the doctor’s instructions for treatment.