Psoriasis, which is characterized by the covering of silver-white scaliness and various Sizes of redness with clear boundary, is an intractable skin disease that repeats aggravation and remission. The objective of the present clinical report is to demonstrate that oriental medical treatment after differentiation of syndromes is effective in treating psoriasis, an intractable skin disease. For this purpose, we identified the pattern of three psoriasis patients based on blood heat and viscous blood, and applied acupuncture and herbal medicine to them. The effect of treatment was evaluated using PASI (psoriasis area and severity index). In all of the three cases, the results of treatment were satisfactory. Thus, oriental medical treatment after differentiation of syndromes, which is highly effective without side effect, is considered to make a great contribution to the treatment of psoriasis in the future.