After vaginal delivery, because the fetal head and limbs pass through the soft birth canal of women, women's vagina will expand to a certain extent, and then the pelvic floor muscles will be strained or even torn, so most women will have vaginal relaxation after vaginal delivery.

After the puerperium, with the exercise of women's pelvic floor muscles, many women's pelvic floor muscles, including vaginal relaxation, can be greatly relieved, especially after some therapies such as electrical stimulation and postpartum rehabilitation, most pelvic floor muscles can be restored to the state of vaginal delivery, or even to the state before pregnancy, so there is no need to worry about pelvic floor muscle relaxation or vaginal relaxation after childbirth.