Pelvic entry refers to the entry of the fetal previa into the pelvic cavity of the pregnant woman in late pregnancy. Generally, labor and delivery will take place about 2-3 weeks after the fetus is in the pelvis for the first time, while labor and delivery often begin immediately after pelvic entry for women in labor. One method is internal examination to determine whether the previa is in the pelvis; another method is external palpation to feel the fetus’ head in the pelvis and its position is basically fixed; and another method is ultrasound to clearly determine it. Fetal entry is usually head first into the pelvic cavity of the pregnant woman, and through this change helps to stabilize its own position and prepare the pregnant woman for delivery. If the fetus is too large, the umbilical cord is wrapped around the neck, or the fetus head is not symmetrical with the pelvis, the fetus may not enter the pelvis smoothly and even cause premature rupture of the fetal membranes, which may require a cesarean section if necessary. The following sensations may occur during the process of fetal insertion, including finding the belly leaning down; there will be a feeling of abdominal cramping and a vague pain; both lower limbs are swollen and painful; it feels like something suddenly drops from the body; the floor of the uterus will drop, and it will feel that the pressure on the upper abdomen is significantly reduced, and the amount of eating increases and breathing is light and fast. In addition, the descending fetal head pressing on the bladder or rectum can lead to frequent urination and constipation. In addition, there are some pregnant women who do not feel anything. When a pregnant woman experiences the above conditions in late pregnancy, especially the feeling of the fetus migrating downward, she should go to the hospital for examination to avoid the fetus not being stable into the pelvis, which may negatively affect her delivery. If the fetus is not in proper position in the pelvis, you can perform moderate exercises under the guidance of the doctor, such as adopting the knee-chest position, to help the fetus correct its position. If the fetus does not enter the pelvis or is not properly corrected, you should go to the hospital in time for delivery, and the doctor will decide whether to perform a cesarean section according to the condition of the pregnant woman. For pregnant women who are already in the pelvis, they should keep their mood happy and pay attention to rest after the pelvis is in. If there is pain in the lower abdomen and the pain becomes more and more intensive, or if there is bleeding, it may be a contraction when the fetus is in labor, which is a precursor of delivery.