Vulvar pain after coitus has many reasons, mainly the following situations: First, it may be excessive friction during coitus, coitus is too strong leading to vulvar mucosal edema and pain. Second, during coitus there will be local blood vessel rupture, so it will also trigger pain, when there is a vaginitis reaction will also lead to pain symptoms, because of its own inflammation exists, after coitus will lead to the body to be stimulated again, so there will be vulvar pain. Third, it may be caused by other factors, such as skin diseases, other systemic diseases, when the symptoms of vulvar pain, we recommend timely treatment, observation of external symptoms to see whether there is redness and swelling, usually pay attention to the best not to excessive sex, so as to avoid stimulation of the body.