The main reason for the phenomenon of vaginal deflation is that the front and back walls of the vagina do not fit together, so the air will enter the vagina and then be discharged out of the vagina, thus forming a sound similar to farting. This situation is clinically known as blowing, the reason why the symptoms of blowing is mainly due to the following reasons: 1, because of vaginal delivery, due to the vaginal delivery of the first part of the long term pressure on the pelvic floor, so that the pelvic floor muscle tension is reduced, so that the vaginal wall relaxation, which will make the vaginal wall can not fit, and then cause this situation. 2, the body is relatively weak, the pelvic floor fat is relatively reduced, the vaginal wall can not fit, and then cause this situation. 2, the body is relatively weak, the pelvic floor fat is relatively The body is thin and weak, the pelvic floor fat is relatively reduced, the vaginal wall can not fit, so it is also recommended to give this situation to gain weight. 3, due to the age of the organs after the age of the relative aging, so it will also appear the vaginal wall relaxation and cause this situation.