Screening for gestational diabetes can be performed at 24-28 weeks of gestation, which is between 6 and 7 months of pregnancy. For gestational diabetes screening, you should not eat any food or water in the morning, and you should first monitor your fasting blood sugar. Under the doctor’s orders, drink glucose powder with 300 ml of water and take it. After 1 hour and after 2 hours, the blood glucose is monitored, and it is necessary to determine whether there is a high blood glucose or a low blood glucose according to the criteria. The reference standard during pregnancy is different from the reference standard during non-pregnancy. After the test, do not judge by yourself, but take it to the obstetrician for detailed judgment. When drinking glucose powder with water, pay attention to the concentration, not too low and not too high, it must be 300ml, if it is too low or too high, it will affect the results of the test.