Glucose screening, short for gestational diabetes screening, is used to diagnose gestational diabetes and is usually done through a glucose tolerance test (OGTT). It is performed at 24-28 weeks of pregnancy. Since gestational diabetes can have a significant impact on the fetus as well as the pregnant woman. Abnormally high glucose tolerance screening results compared to normal values may result in hyperosmolar coma and ketoacidosis for the pregnant woman, and for the fetus, may result in a giant fetus, delayed fetal lung development, and intrauterine hypoxia in the fetus during late pregnancy. Therefore, it is recommended that every pregnant woman should always have glucose screening around 24 weeks of pregnancy. For pregnant women whose glucose tolerance is higher than normal, it is recommended to maintain a balanced diet throughout pregnancy, and it is best to avoid some foods with high sugar content, and to eat more fresh vegetables and coarse grains. After dinner, you can take a walk for half an hour to one hour to reduce the rise of blood sugar in your body. If blood glucose control by diet and exercise is not satisfactory, you should seek medical advice and use insulin for blood glucose control under the guidance of your doctor.