The uterus grows in the pelvic cavity of women and is below the pubic symphysis on the surface of the body, so the uterus cannot be felt normally and is suspended in the pelvis by four ligaments. The main ligament prevents the uterus from sagging; the broad ligament is located on both sides of the uterus and wraps around part of the fallopian tubes to prevent the uterus from moving from side to side; in front is the bladder; and behind is the rectum. When a woman’s uterus increases in size during pregnancy, the bladder is the first to be affected, and women experience frequent and urgent urination during early pregnancy. As the months of pregnancy increase, the bladder presses on the rectum, resulting in slower bowel movements and unfavorable bowel movements, which is the reason why most pregnant women, combined with constipation. In case of normal delivery and poor recovery after delivery, the position of the uterus may change and uterine prolapse may occur, which can be corrected by surgery.