Itching in the vulva with sanitary napkins, firstly, change the inner sanitary napkin in time, or change the brand of sanitary napkin to prevent allergy to certain sanitary napkins. Secondly, keep the vulva clean and dry, on the one hand, rinse the vulva with flowing water, and prohibit tub baths, sitz baths or irrigation of the vagina. Finally, change your underwear and sanitary napkins in a timely manner, wear breathable, cotton clothing, eat more fresh vegetables and fruits, and keep your bowels open. The application of sanitary napkins during menstruation may lead to high local skin temperature, and the menstrual blood itself serves as a good culture medium for bacteria, which can easily breed bacteria between periods and lead to vaginal inflammation.