Every time you have your period, it is itchy down there, it may be due to inflammation of the vulva and vagina causing itchy down there, or due to allergy to sanitary napkins causing itchy vulva. During menstruation, pay attention to keep the vulva clean and hygienic, you can wash the vulva with a lotion that removes dampness and relieves itching, and you can also give itch-relieving ointments to apply externally, such as ketoconazole ointment, clobetasol propionate cream on the vulva, etc., all of which can play a role in reducing inflammation and relieving itching. During menstruation, you can change the brand of sanitary napkin or switch to toilet paper, which is relatively breathable. During menstruation, women should pay attention to keep the vulva clean and hygienic, wash the vulva, change sanitary pads frequently, and prohibit cold, spicy and stimulating food during menstruation, and eat a light and nutritious diet.