Postpartum uterine prolapse is usually caused by pelvic floor muscle relaxation. Postpartum pelvic floor muscle relaxation can occur in the form of pelvic organ prolapse, such as uterine prolapse, bladder bulge, bulging of the anterior and posterior walls of the vagina, and bulging of the rectum. During pregnancy, as the uterus and fetus continue to grow, a woman’s sitting and standing postures can put some pressure on the loose pelvic floor muscles, leading to the development of the disease. At the same time, in order to give birth normally, the muscles of the pelvis and the whole body will become loose, and the ligaments between the joints will also be loose, which will enable the pelvis to expand as much as possible, thus allowing the fetus to pass through smoothly, and the supportive function of the organs of the pelvic floor will be weak, and the organs will be prolapsed at the weaker muscles. If symptoms of postpartum uterine prolapse occur, you need to seek prompt medical treatment.