Itching of the vulva during menstruation is related to the use of sanitary napkins and local bacterial infections. 1. It may be due to the itching, redness and swelling of the skin caused by the woman’s allergy to sanitary napkins. 2. It may be due to the fact that during menstruation, the blood in the vagina is not excreted in time, leading to local bacterial and viral infections, which can lead to vulvar itching. Therefore, in the case of vulvar itching during menstruation, first of all, change the sanitary napkin with better quality. Secondly, wash your vulva with warm water every day, or if necessary, you can also wash your vulva with cleanser and wear loose underwear. Do not eat spicy and stimulating food, it will be relieved and disappear in 1-2 days, if not, you can go to the hospital for review and treatment after the menstrual period.