If vulvar itching occurs after menstruation is clean, it is often related to the following factors: 1. Dermatitis of the vulva is caused by the need to use sanitary napkins during menstruation, which are less breathable, and this will lead to dermatitis of the vulva. So it is best to go to the hospital for examination to find out whether there is any possibility of inflammation in the vulvar localization. If there is vulvar dermatitis, you can apply topical Parasol ointment for treatment. 2, due to inflammation of the vagina, due to the menstrual period when the resistance will decline, easy to cause pathogenic bacteria infection. The most common clinical inflammation is vulvovaginal pseudomycosis caused by Candida albicans infection. This situation in addition to itching, accompanied by tofu scum-like secretions, clinically can be treated with mycotoxin suppositories. 3, due to trichomoniasis caused by the vulvar itching, the local can be plugged metronidazole tether for treatment.