Gas discharge after intercourse is usually seen in women who have given birth, caused by changes in the birth canal during childbirth, resulting in rupture of pelvic floor muscle tissue and fascia, or overstretching and loss of elasticity leading to vaginal laxity. In addition, it may also be caused by gynecological inflammation and congenital diseases of the vagina: 1. Vaginal wall laxity: the process of intercourse can cause outside air to enter the cavity in the vagina, and intercourse is mostly accompanied by an increase in abdominal pressure, which can lead to intermittent gas discharge from the vagina, mostly related to poor pelvic floor function rehabilitation training after childbirth or vaginal laxity caused by surgery. In addition, diseases such as uterine prolapse, bladder bulge and rectal bulge of the posterior vaginal wall can also lead to vaginal wall relaxation and such symptoms. 2. Gynecological inflammation: If there are gynecological inflammation caused by bacterial infection in the pelvic cavity, such as vaginitis and pelvic inflammatory disease, bacteria can gradually increase in the vagina, and their metabolic process can also produce and discharge gas. Gas discharge after intercourse may also be an inflammation related performance; 3. congenital diseases of vagina: some women have some congenital diseases of vaginal parts, such as congenital vaginal dysplasia, congenital rectovaginal fistula, etc. The space inside the vagina is larger and it is relatively easier to enter and discharge gas during intercourse. If there is gas discharge after intercourse, gynecological examination should be performed to identify the cause and treat it accordingly. Women with vaginal gas need to take rest, increase nutrition, and do more exercises to strengthen their body; if they have gynecological diseases, they need timely treatment. To prevent vaginal exhaustion, it is necessary to prevent perineal laceration during childbirth, and if there is any laceration, it should be repaired in time. After the original disease is cured, vaginal emission can be eliminated.