The abdominal skin piece of white commonly in vitiligo, lichen planus and other diseases. 1. Vitiligo: This disease is a common acquired pigment loss skin mucosal disease, manifested as milky white or porcelain white pigment loss spots. The cause of the disease is not clear, may be related to autoimmunity, oxidative stress, melanocyte self-destruction, neurochemical factors, genetic factors. 2. lichen planus: this disease is caused by malassezia over proliferation of superficial inflammatory diseases, can be seen in the abdomen, lesions manifested as white hypopigmented spots, scraping can be found fine bran-like scales. It is mainly caused by high temperature and humid environment, local skin fat and sweat, immunity decline and other factors leading to over proliferation of Malassezia. It is recommended that patients go to the dermatology department of regular hospitals, follow the doctor’s instructions to clarify the diagnosis, timely treatment, to avoid delaying the condition.