Normally, during menstruation, the vulva will feel slightly swollen and painful due to pelvic congestion, and the symptoms will be significantly relieved after rest. If there is obvious pain in the vulva, it is an abnormal phenomenon, which is often due to local inflammation of the vulva, and the menstrual blood aggravates the local congestion, so it will lead to pain in the vulva during menstruation. It is recommended to keep the local clean, wash the vulva twice a day with warm water or cleaner, and apply erythromycin ointment in the local area. And to change sanitary napkins, it is best to use cotton sanitary napkins, to ensure that the local ventilation is good, but also help the inflammation as soon as possible absorption. If the medication for three days still did not improve, timely to the hospital to do the appropriate examination, to understand the specific causes of pain, and then give the appropriate treatment.