Girls itchy down there, usually refers to the girls vulva itch, may be due to local allergies, vulvitis, vaginitis and other reasons. 1. Local allergy: some girls contact with certain allergic substances, such as: new underwear did not wash, excessive sweating, etc., it is easy to cause vulvar allergy phenomenon, manifested as vulvar itching, rashes and other symptoms. 2. Vulvovaginitis: some girls usually do not pay attention to personal hygiene, or the regular use of pads, may lead to poor ventilation of the vulva, so that the vulva is in a state of prolonged moisture, breeding bacteria, induced vulvar inflammation, manifested as itching symptoms. 3. Vaginitis: some girls suffer from trichomonas vaginitis, bacterial vaginosis, candida vaginitis and other vaginal inflammation, due to the long-term stimulation of pathogenic bacteria, may also cause vulvar itching symptoms, but at the same time can be accompanied by leukorrhea, leukorrhea, change in the nature of the leukorrhea, odor and other symptoms. There are many reasons for girls’ itchy vulva, and it may be caused by other reasons. It is recommended to go to the hospital in time, and after the doctor’s interview and the relevant examination results, to clarify the specific causes of the disease, and follow the doctor’s instructions, and treat the cause.