Itching of the vulva when menstruating is the most common gynecological condition in clinical practice is vulvar allergic dermatitis, vulvar dermatitis, or due to vaginal inflammation, such as localized allergy caused by not taking better care of the vulva or using sanitary napkins, which can cause localized itching of the vulva. In addition, in case of Candida albicans infection, trichomonas infection and mycoplasma and chlamydia infection, as well as Gardnerella infection, all may lead to increased secretion and cause localized itching of vulva during menstruation, so it is important to keep the vulva locally clean and change sanitary napkins regularly during menstruation. If itching occurs, it is best to go to the hospital for a face-to-face consultation and, if necessary, a laboratory test of the secretions to find out which pathogenic infection is causing the vulvar itching, and then give medication according to the results.