Uterine prolapse means that the uterus descends from its normal position along the vagina and the cervix reaches below the level of the sciatic spine, or even the uterus is completely prolapsed outside the vaginal opening. The main causes of uterine prolapse are as follows: 1, childbirth injury: pregnancy, childbirth, especially forceps assisted delivery or vaginal delivery with fetal suction difficulties, may cause excessive strain on the pelvic floor muscles and uterine ligaments and weaken their ability to support the uterus, causing uterine prolapse. In addition, premature participation in physical labor after childbirth, especially heavy physical labor, will affect the recovery of the pelvic floor tissues, resulting in different degrees of downward migration of the unrecovered uterus. 2, chronic increase in abdominal pressure: chronic cough, fluid in the abdomen, frequent heavy lifting or constipation and increase in abdominal pressure, some obese women, especially abdominal obese women, can also lead to increased abdominal pressure, which causes uterine prolapse. 3, age: with the growth of age, especially postmenopausal women, the pelvic floor muscle relaxation or even atrophy degeneration, the incidence of uterine prolapse is significantly higher. 4, history of pelvic surgery: pelvic surgery can destroy the supporting structures of the pelvis and damage the peripheral nerves, resulting in pelvic dysfunction and uterine prolapse. 5, congenital developmental abnormalities: a small number of unborn women have uterine prolapse because of the poor development of the supporting tissues of the reproductive system. In summary, there are many causes of uterine prolapse, mostly caused by various factors that lead to abnormalities in the pelvic floor tissues that support the uterus.