The internal organs will naturally return to their place after delivery. Women’s organs during pregnancy are not really displaced, but only due to the gradual growth of the fetus in the uterus during pregnancy, the uterus from the pelvic cavity into the abdominal cavity, and upward extrusion of the thoracic cavity, resulting in the original abdominal and thoracic cavity of the organs by the extrusion and displacement, but not a real change in the location of the organs. With the delivery of the fetus, the uterus returns to its normal pre-pregnancy size after the puerperium and goes back to the pelvis, and the original squeezed abdominal and thoracic space is left, and the organs will return to their original positions with the recovery of the mother’s body. However, the pelvic floor muscles are squeezed by the fetus and labor, and the pelvic floor muscles will become loose, resulting in postpartum urinary incontinence, anterior and posterior walls of the vagina, uterine prolapse and other phenomena, which require pelvic floor muscle exercise and repair after delivery.