Girls itchy private parts may be trichomonas vaginitis, bacterial vaginitis, vulvovaginal pseudomycosis, vulvar sclerosing moss and other reasons, need to local or systemic medication for the cause of the disease, such as metronidazole, ketoconazole and so on. 1. Trichomonas vaginitis: Trichomonas vaginitis requires systemic medication, preferred metronidazole, tinidazole and other oral, pay attention to avoid breastfeeding within 1 day after taking metronidazole, take tinidazole 3 days can not breastfeeding. At the same time, we should pay attention to the sexual partner for anti-infection treatment, to avoid repeated infections. Pay attention to the cleanliness and hygiene of the vulva and vagina. 2. Bacterial vaginitis: metronidazole, tinidazole, clindamycin and other antibacterial drugs orally, and with the local use of vaginal drugs such as metronidazole suppositories, clindamycin ointment and other treatments. Pay attention to vulvovaginal hygiene. 3. Vulvovaginal pseudomycosis: change the inner clothes diligently, boil water to wash the used bath towel and other supplies. Local use of clotrimazole preparations, miconazole preparations, mycotoxin preparations and other antifungal drugs, you can also take oral fluconazole treatment. Pay attention to the cleanliness and hygiene of the vulva and vagina. 4. Vulvar sclerosing moss: atrophy and thinning of the vulvar skin due to autoimmunity and lack of sex hormones, which causes vulvar itching and pain. Androgens such as testosterone propionate, progestins such as progesterone, glucocorticosteroids such as clobetasol and trimethoprim, and immunosuppressants such as tacrolimus can be applied. Itchy private parts may be related to a variety of factors, it is recommended to consult a doctor for a clear diagnosis. Pay attention to the use of medication under the guidance of a physician.