If you have vulvovaginal itching every time you finish your period, there are two main possibilities: first, the patient’s body condition decreases, the vaginal resistance decreases, and the vaginal flora becomes dysbiosis after the menstrual blood flush. After the inflammation is cured, you can use lactobacillus vaginal capsule to adjust vaginal flora and enhance vaginal resistance. Secondly, itchy vulva is caused by local infection due to lack of hygiene during menstruation or untimely replacement of sanitary napkins. The sanitary napkin should be changed once in 2-3 hours, and loose, cotton underwear should be worn. At the same time, the vulva can be washed regularly with water every night to reduce the local discomfort caused by the stimulation of menstrual blood.