Blood sugar 4.7mmol/L is normal because the normal reference value of fasting blood sugar is between 3.9-6.1mmol/L and the normal reference value of postprandial 2h blood sugar is between 4.4-7.8mmol/L. So blood sugar 4.7mmol/L whether fasting or 2h after meal, or randomly measured blood sugar, all belong to the normal range, this situation is not to worry, there is no diabetes. Normally, you should pay attention to your annual physical examination and review your blood sugar once a year. If you have symptoms of dry mouth, excessive drinking, excessive urination and weight loss, you need to go to the hospital to review your blood sugar in time to see if you have diabetes. 4.7mmol/L blood sugar is normal, so don’t worry, pay attention to your medical checkups and pay attention to regular diet and rest in life.