The main causes of uterine prolapse in women include pregnancy, childbirth, aging, increased intra-abdominal pressure, and medical factors, as explained below: 1. pregnancy, childbirth: vaginal delivery, especially difficult labor and forceps delivery, etc., the maternal pelvic fascia, ligaments, muscles may be overstretched and its supportive force is weakened, causing uterine prolapse. 2. Aging: As age increases, especially after menopause when estrogen levels decrease, the supporting structures atrophy, which can result in pelvic floor laxity and cause uterine prolapse. 3. Increased intra-abdominal pressure: chronic bronchitis, abdominal effusion, continuous weight bearing, constipation and other factors can cause increased intra-abdominal pressure, causing uterine prolapse. 4. Medical factors: failure to adequately correct the defective pelvic support structures caused by surgery, resulting in prolapse of the anterior wall of the uterus of medical origin.