The normal range of human blood sugar is between 3.6-6.1mmol/L. The food consumed by the human body is digested and absorbed by the gastrointestinal tract, and it will be decomposed into various monosaccharide substances, which will cause a slight increase in blood sugar, but because of the presence of the pancreatic islets in the body, the excess syrup substances can be consumed and metabolized, so that the human body’s blood sugar can be kept within the normal range. People’s blood sugar will rise slightly after eating, but it will not exceed 11.1mmol/L. If the blood sugar level is too high, patients should go to the hospital for oral glucose tolerance check in time, even after diagnosis and receiving treatment, they need to check blood sugar and glycated hemoglobin at the hospital regularly, which helps to judge the treatment effect, keep blood sugar within the normal range and avoid fluctuation of blood sugar, which can effectively ensure the health of the body Keeping blood glucose within the normal range and avoiding blood glucose fluctuations can effectively ensure the health of the body.