There is no fixed time for the fetus to enter the pelvis, and the time for each fetus to enter the pelvis is related to the movement, sitting position and physical characteristics of the pregnant woman, so it cannot be generalized. The time of pelvic entry is when the fetus enters the mother’s pelvic cavity and the position is corrected for delivery. Usually, a woman will enter the pelvis at about 37-38 weeks of pregnancy, but the time of entry of the fetus can be affected by many factors. If the pregnant woman’s abdominal muscles are less elastic, or if she does not pay attention to exercise and often takes a sitting position, it may cause the fetus to enter the pelvis relatively late, but the time to enter the pelvis does not affect the time of delivery, some women even start to enter the pelvis just before delivery, but if the fetus is late to enter the pelvis, it may easily cause premature rupture of the fetal membranes, which may threaten the normal pregnancy. During late pregnancy, pregnant women are advised to go to the obstetrics department for obstetric checkups, observe the growth of the fetus, maintain nutritional supply, adjust their mindset and be active.