Professional analysis: causes of female pelvic floor injury Every woman’s pelvic floor is squeezed by the fetal head during childbirth, the pelvic floor is stretched and lengthened, the muscles are highly dilated, the pelvic floor is denervated and the connection between connective tissues is separated and other changes occur. Difficult delivery, instrumental delivery, etc. are likely to cause damage to the pelvic floor and the tissues surrounding the urethra, changes in the position and mobility of the bladder neck, decreased urethral closure pressure, chronic stretching of the pelvic floor caused by gravity as the uterus increases in pregnancy, soft tissue damage of varying degrees; mechanical injury to the anal raphe and pubic nerves during pregnancy and delivery. Pelvic floor injury causes 1 pregnancy: during pregnancy, throughout pregnancy, the weight of the uterus gradually increases with the progress of pregnancy, the position of the uterus in the pelvic and abdominal cavity also gradually becomes vertical, to late pregnancy the uterus becomes almost a vertical organ, which makes greater force directly pressed to the supporting tissues of the pelvic floor. As the uterus grows and the spine bends forward, the pelvic cavity is gradually subjected to pressure in the downward direction, coupled with increased collagen lysis of the pelvic floor ligaments and ligamentous laxity in late pregnancy, the combined force on the cervical ring is still downward in the backward direction, but mainly downward, acting on the genital fissure, which shows how important the impact of pregnancy itself is on the pelvic floor. Pelvic floor injury cause 2 childbirth: perineal tears during childbirth, perineal lateral incision on the pelvic floor muscle fibers and nerves have a certain degree of damage, so that the perineal tension decreases, the perineal nerve conduction time is prolonged, thus reducing the pelvic floor contraction capacity. The direct trauma or nerve injury of vaginal delivery further aggravates the abnormalities of urethral and pelvic floor function. Pelvic floor injury cause 3 lunar period: after childbirth, such as often lying on their backs, the uterus often tilts backward due to the relaxation of supporting tissues. The result of posterior tilting of the uterus makes the uterine axis consistent with the vaginal axis, creating conditions for uterine prolapse. After childbirth, such as premature participation in heavy physical labor, or chronic cough, habitual constipation, or long-term squatting, standing work, forcing the abdominal pressure to increase, causing the uterus to shift downward. Especially those combined with abdominal pressure increased shoulder lifting and other labor. Can lead to the Department of prolapse, serious cases can even lead to rectal and bladder bulge at the same time. Pelvic floor injury cause 4 menopause: menopause or after menopause, due to the gradual decline of ovarian function, estrogen levels decline, the reproductive tract support weakened, uterine prolapse or urinary incontinence phenomenon. Pelvic floor health is directly related to women’s health The female pelvic floor is mainly composed of three layers of muscles and fascia, which play the function of closing the pelvic outlet, carrying and supporting the organs in the pelvic cavity. The function of the pelvic floor is directly related to many gynecological diseases and affects the quality of life of women. The incidence of pelvic floor dysfunctional diseases in women over 30 years of age is as high as 40%-50% due to factors such as childbirth, disease and aging, and timely pelvic floor rehabilitation after childbirth has a great effect on postpartum pelvic floor relaxation. The pelvic floor muscle rehabilitation not only helps the mother to regain her figure, but more importantly, the targeted training of the 8 pelvic floor muscles after 42 days postpartum can reduce bladder prolapse and uterine prolapse and minimize the possibility of menopausal incontinence due to childbirth. In addition, the immediate effect of postpartum pelvic floor muscle rehabilitation is the treatment of postpartum vaginal laxity in order to improve the quality of sexual life of couples after childbirth. Pelvic floor muscle rehabilitation exercises are gradually being accepted for their non-invasive, less painful, safe and effective advantages.