The skin of vulvar sclerosing lichen planus has distinctive features in distribution, color, thickness and elasticity. 1. Skin distribution: mostly symmetrically distributed. 2. Skin color: the skin gradually fuses from pink papules in the early stage to purpura-like, and later the color gradually becomes white. 3. Skin thickness: Early skin swelling and thickening, later gradually shrinking and thinning, showing “cigar paper” or sheepskin-like changes. 4. Skin elasticity: skin elasticity gradually decreases, and the vaginal opening is contracted and narrowed. In addition to the above features, the skin of vulvovaginal lichen sclerosis can also be dry and cracked, peeling, bleeding and so on. However, in young girls, the skin changes are usually mild, and the lesions may disappear on their own at puberty. Therefore, it is recommended to go to the hospital in time to improve the relevant examination, under the guidance of professional doctors to clarify the cause of the disease, and timely treatment.