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LUAN Chao, CHEN Min, CUI Pan-gen. Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, China Corresponding author: CHEN Min��Email: drchenmin@126.com ��Abstract�� Psoriasis is associated with genetic and environmental factors, but the etiology of psoriasis has not been clarified completely. Recently, the relationship of nutrition and life style with psoriasis has attracted more and more attention, and it has been found that many nutrients such as vitamin A, vitamin B, gluten and selenium, as well as life habits such as smoking, drinking and exercise, can inhibit or trigger the development of psoriasis, and some foods which have been traditionally considered to be beneficial or harmful appear to be unrelated to psoriasis. Also, many more controversies and new questions have been presented. This contribution reviews new findings and lists controversial issues in this field, in order to provide reference for clinical practice and further research. ��Key words�� Psoriasis; Nutrition therapy; Life style