Pain after sexual intercourse is often caused by the following clinical reasons: first, because the vagina itself has inflammation, inflammation of the vaginal mucosa will appear congestion, edema. After intercourse, the friction of sex will cause the vaginal mucosa to become more congested, so it will cause localized pain. Secondly, because sex is relatively rough, it can cause localized damage to the vaginal mucosa or vaginal opening and lead to pain. If you have vaginitis, actively treat the inflammation, if necessary, do routine laboratory tests to understand the infected pathogens, targeted medication. In addition, it is also recommended to be gentle during sex to avoid causing vaginal or vulvar damage and localized pain, which should be paid special attention to.