For a full-term baby, the baby cannot be born until the amniotic fluid breaks. We must first break the membranes and the baby can be delivered only after the amniotic fluid has almost flowed. In the case of premature babies, because the gestational week is relatively small, it is possible to deliver the baby as a whole without breaking the amniotic fluid and the amniotic sac wrapping the fetus and wrapping the amniotic fluid at a certain point in the opening of the uterus. When it comes to delivery, some patients have premature rupture of fetal membranes, while some pregnant women have regular abdominal pain, and after the opening of the uterus is complete, the fetal membranes still have not ruptured, then in order to help the pregnant woman deliver, the doctor will perform artificial rupture of membranes after the opening of the uterus is complete, and after the artificial rupture of membranes let the amniotic fluid flow out, then the baby can be delivered smoothly. So for a full-term fetus, the amniotic fluid cannot be born without rupture, and preterm birth is a different story.