When menstruation comes, the vulva is contaminated with menstrual blood, the underwear and sanitary napkins are not changed in time, and the vulva is not washed in time, which makes it more likely to breed bacteria and vaginitis. Therefore, you can wash your vulva when you have your period without any effect. However, when you do so, you should wash your vulva as much as possible, just simply by washing it, not by sticking your hand into the vagina, which can easily cause vaginitis and destroy the vaginal flora. Even if you are not able to wash your vulva, you can take a shower, not a tub. During menstruation, try to change your sanitary napkin every four hours, change your underwear every day, and eat less spicy and stimulating food and cold food to avoid inflammation of the vulva.