Usually, it may take 2-3 weeks for the baby to become fully pelvic, but this varies from person to person. The process of the fetus descending into the pregnant woman’s pelvis is called pelvic insertion, usually at 34-37 weeks of gestation, the part of the fetal prelude can partially enter the pelvis, but it is not yet fixed, so it can be moved, and may even revert back to the state of not being inserted into the pelvis. 36-39 weeks of gestation, the part of the fetal prelude has been completely inserted into the pelvis, that is, fully inserted into the pelvis, and then it can’t be moved. However, the time between half-pelvic and full-pelvic is not fixed, some pregnant women may experience full-pelvic a few days after half-pelvic, while some may not experience full-pelvic until after labor, and the time between full-pelvic and the time of delivery are not necessarily related, so there is no need to worry too much. If the fetus is too big, placenta praevia or other reasons, the fetus can not be fully pelvic, pregnant women can take a walk, climb the stairs to accelerate the fetus into the pelvis, and if necessary, terminate the pregnancy with a cesarean section under the advice of a doctor. Pregnant women need to take regular checkups during pregnancy, observe the fetal movement, usually take more walks, and go to the hospital in time to wait for labor.