Objectives : This study is aimed to analyse immunohistochemical research trend on psoriasis and consider the results in terms of Korean medicine. Methods : We analyse both immunohistochemical research papers and Korean medical papers on psoriasis, which I searched using KISS(Korean studies Information Service System) and OASIS(Oriental Medicine Advanced Searching Integrated System). Results : Psoriasis is characterized by hyperporliferation of the epidermis, inflammatory cell accumulation and increased tortuosity and dilatation of dermal papillary blood vessels. Recently, angiogenesis is considered to play a major role in pathogenesis of psoriasis. Conclusion : In Korean medicine, blood-tonifying, blood-cooling and blood-activating medicinal herbs have generally been used to treat psoriasis. I consider these herbs which also treat vessel problem can have an effect on angiogenesis of psoriasis.