Itchy perianal skin in women may be due to perianal eczema, contact dermatitis, excreta residue and other factors. 1. Perianal eczema: this belongs to the perianal chronic recurrent inflammatory skin disease, lesions in various forms, itching intense, the cause is still unclear, may be trauma, friction, mental stress, overwork and other factors. 2. Contact dermatitis: the perianal skin is relatively thin and tender, may be due to wearing chemical fiber underwear, or the use of toilet paper or sanitary napkins containing irritating ingredients, thus producing stimulation of the perianal area, and then there will be itching symptoms. 3. Excrement residue: If women do not pay attention to personal hygiene, the perianal area there are excreta residue, there may be bacterial accumulation to stimulate the skin, which in turn produces itching symptoms, accompanied by the performance of odor. Women’s perianal skin itching may also have other reasons, need to cooperate with the doctor to improve the examination, and give targeted treatment and therapy.