The average delivery is around 40 weeks, but it varies depending on the condition of the mother and the fetus, and a full-term delivery is considered to be before 37 to 42 weeks. From the first day of the last menstrual period, pregnancy lasts about 280 days (40 weeks). A full-term baby is born between 37 weeks and 41 weeks + 6 days, while a baby born at 28 weeks but less than 37 weeks of gestation is considered preterm, and a baby born at 42 weeks or more of gestation is considered term. Full-term infants generally have good lung function and are highly viable; preterm infants are relatively less viable and require more meticulous care; and expired pregnancies have adverse effects on both mother and child due to factors such as decreased amniotic fluid. Generally speaking, if the condition of the mother and child is stable, the mother and child will try to stay in the hospital until full term, go to the hospital for regular checkups, and wait until the due date to be admitted into the ward to wait for the delivery of the baby. If the mother has pregnancy complications such as gestational hypertension, gestational diabetes or fetal abnormalities, she may need to give birth earlier depending on the situation; if there is an expired pregnancy, labor can be induced if there are no contraindications.