Itching of the vulva during menstruation is clinically most likely due to the lack of diligent changing of sanitary napkins and the contact of menstrual blood on the sanitary napkins with the vulva, causing skin irritation and itching. After the above treatment, if there is still no improvement, it is recommended to wash the vulva with 30% of cleanser, and it is also recommended to apply local mometasone ointment twice a day, the itching will be relieved soon. After the menstrual period is completely clean, go to the hospital to do the corresponding examination, it is best to do the routine laboratory examination of the white belt, according to the results of the clinical then give the corresponding drugs for treatment, when the menstrual period to keep the vulva clean is very necessary.