October 29 is World Psoriasis Day. As an immune mediated chronic skin disease, psoriasis will not directly threaten life, but will have a greater impact on the quality of life of patients. With the introduction of China's "Internet+medical health" development policy in recent years, AI combined with big data provides more possibilities for medical diagnosis and treatment. What are the advantages of AI technology in the auxiliary diagnosis of psoriasis? In this issue, People's Daily Online invited Wang Aiping, the chief physician of the Department of Dermatology and Venereology of Peking University First Hospital, to interpret online.