If the vulva itches during menstruation, it can be treated with medication, such as washing the vulva with water and applying dermatophyte or mometasone ointment locally, which will soon stop the itching. It is recommended to go to the hospital after menstruation to do the appropriate examination to find out whether the vulva is allergic to the phenomenon, and to do the routine test of the leukorrhea, according to the results of the decision to use medication and give treatment. The most common cause of vulvar itching during menstruation is allergy to sanitary napkins. It may also be due to decreased resistance during menstruation and pathogenic bacteria infection, causing vulvar itching, so it is recommended to have a checkup after menstruation. During menstruation, you must keep your vulva clean and change sanitary napkins frequently to reduce the chance of infection.