Fasting blood glucose 7.3mmol / L has exceeded the normal range, is generally serious, it is recommended to consult a doctor in a timely manner, after clarifying the cause of the disease, under the guidance of the doctor to determine whether it is necessary to take medication, it is not recommended to simply based on the level of blood glucose, take medication on their own. Normal blood glucose level should be between 3.9 and 6.1mmol/L in case of fasting, less than 7.8mmol/L in 2 hours after meal, and less than 11.1mmol/L in case of random. A fasting blood glucose value of 7.3 mmol/L should first clarify the etiology. It is possible that the elevated fasting blood glucose is caused by infection, stress, etc. There is also the possibility of diabetes, and it is recommended to treat the cause of the disease under the guidance of a doctor. If infection, stress and other causes of elevated fasting blood glucose, should actively treat the original disease; if the fasting blood glucose is greater than or equal to 7.0mmol / L and have typical symptoms of diabetes, can be diagnosed as diabetes, this time under the guidance of the doctor, taking hypoglycemic drugs or injections of insulin treatment. It is recommended that patients regularly test their blood glucose values and take treatment and medication under the guidance of a doctor, and should not take medication privately to avoid adverse consequences.