Glucose screening test is a test to detect gestational diabetes and the best time for glucose screening test is between 24th and 28th week of pregnancy. Glucose screening is the abbreviation of gestational diabetes screening, pregnant women can determine whether pregnant women have diabetes through glucose screening, the best time for glucose screening test is between the 24th and 28th weeks of pregnancy. The best time to take a glucose screening test is between the 24th and 28th weeks of pregnancy. At this stage, the fetus grows and develops faster, and the pregnant woman’s physical state is more stable, so glucose screening at this time is more accurate, and if high blood glucose is detected, timely intervention and treatment can be carried out to avoid affecting the fetus. Glucose screening can avoid the risk of miscarriage, preterm labor, premature rupture of membranes or macrosomia. Glucose screening is a mandatory part of the pregnancy test, and it is recommended that all pregnant women undergo the test to rule out the risk of gestational diabetes. In addition, pregnant women should try to pay attention to their dietary patterns before the glucose screening, avoid drinking sweet drinks and eating sweet foods early in the morning on the day of the test, and fast for 8 hours before the test.