The first is pathological reasons. In addition to all kinds of congenital anomalies, there are also some acquired anomalies of female reproductive organs, such as vaginal relaxation, which also need surgery.

Vaginal relaxation is due to the fact that vaginal delivery damages the pelvic floor muscles and fascia that maintain vaginal elasticity and tightness to varying degrees. At the same time, with the increase of age, ovarian function gradually declines, estrogen secretion decreases, which makes pelvic floor supporting structures such as fascia and muscle degenerate, mucosa atrophy, vagina relaxation and lack of elasticity. Some women's urethra or bladder bulges, leading to stress urinary incontinence, dysuria or repeated urinary system infections, or constipation due to rectal bulging. Some patients have sex.

Vaginal contraction is actually an improved repair of the anterior and posterior walls of vagina, which can enhance the elasticity of vagina, make the perineum elastic and appropriate, restore the torn perineum to the prenatal state, and prevent diseases such as uterine prolapse, bladder, urethra and rectum prolapse caused by loose pelvic floor tissue.