The guidelines stipulate that the normal range of blood glucose during pregnancy for pregnant women with hyperglycemia is: fasting blood glucose <5.3mmol/L, 1 hour postprandial blood glucose <7.8mmol/L, 2 hours postprandial blood glucose <6.7mmol/L. Pregnant women in the 24-28 weeks of pregnancy should do glucose tolerance screening, usually 75g of glucose water by mouth after a blood test, you need to test fasting blood sugar, 1 hour after drinking sugar water, 2 hours of blood sugar, comprehensive judgment of the level of blood sugar. Women with low blood sugar after pregnancy may lead to headache, dizziness and other discomforts, which will affect the development of the fetus. If the blood sugar is too high, it may also lead to the emergence of gestational diabetes mellitus, giant baby, etc. Therefore, too low or too high blood sugar is not conducive to the growth and development of the fetus. It is recommended that pregnant women do regular blood glucose checkups during pregnancy, and go to the hospital in time to receive treatment for either high or low blood glucose.