The face has a white piece is usually caused by vitiligo, white furfur, florid chaff rash and other diseases. 1. vitiligo: the etiology and pathogenesis is not clear, may be related to genetic, autoimmune, melanocyte self-destruction theory, etc., good in the face, neck, wrist and other parts of the skin lesions of varying sizes, irregular shape of the milky white or ceramic white pigmentation patches. 2. White furfur: the cause of this disease is not clear, may be related to microorganisms such as Malassezia. It occurs on the face, especially around the mouth, chin and other parts. The lesions are red at the beginning, and when they subside, they can leave pale spots with unclear edges and dry, fine bran-like white scales on the surface, resulting in a white patch on the patient’s face. 3. maculopapular furuncle: caused by Malassezia infection, invasion of the skin stratum corneum, this disease has a certain genetic susceptibility. The disease has certain genetic susceptibility. It occurs in the face and neck, upper arms and other parts of the body, at first the skin lesions are point-like, with the development of the disease, it can gradually increase to the size of the nail, but also can be fused into a piece. The skin lesions can be brown, light red, white, etc., and the surface with chaffy scales, resulting in the patient’s face has a white piece. In addition, there are many other causes of white face, it is recommended to go to the hospital in a timely manner to find out the cause of the disease, and receive treatment as soon as possible.