(1) Natural childbirth

Vaginal relaxation mostly occurs in women who give birth many times or the muscles around the vagina are torn or thinned due to the large fetal head, or the muscle tissue is not completely sutured during vaginal lateral incision and suture, resulting in the loose vaginal opening and decreased contractility.

(2) frequent sex

In general, after women are 30 years old or have a sexual history of more than 3 years, the vagina is aging and slack due to long service life and frequent stretching, resulting in loose vagina, reduced stimulation response and reduced vaginal wall exudation, which directly affects the sexual quality of both parties; Middle-aged and elderly women over 40 years old generally have naturally aged vaginas, and their ovarian function gradually declines, and the amount of estrogen decreases, resulting in decreased muscle tension, petty mucous membranes, loose and dry vaginas and lack of elasticity.

(3) Multiple abortion

After the abortion, there are "two mutations" in the lower yin: in the early stage of pregnancy, the muscles of the vagina and pelvic cavity have begun to relax. During the abortion operation, the elasticity of the vagina is weakened after expansion, and the tissues that cannot be discharged after operation remain in the vaginal folds and the posterior vault, supporting the inner wall of the vagina.

⑷ Age factor

With the increase of age, the estrogen level of women decreases, which makes the muscles, fascia, ligaments and related supporting structures deform, the tension of muscles decreases, the fascia becomes thinner, and the vaginal mucosa shrinks, which makes the vaginal relaxation more serious.

5] Other factors

Some people who have chronic diseases for a long time, are weak and emaciated, and their muscles, fascia, ligaments and other structures are also relatively loose, which also aggravates vaginal relaxation.