The invention discloses a Chinese medicinal composition for treating psoriasis and belongs to the technical field of psoriasis treatment medicines. The invention adopts a technical scheme that the Chinese medicinal composition for treating psoriasis is characterized by being prepared from the following medicinal material in part by weight: bighead atractylodes rhizome, motherwort fruit, fineleaf schizonepeta herb, honeysuckle, sinkiang arnebia root, tuckahoe, root bark of the indigowoad root, talcpowder, common ducksmeat herb, belvedere fruit, burdock, root of common peony, root of rehmannia, densefruit pittany root-bark, coix seed, phellodendron, sophora flavescens and liquoric root. Compared with the prior art, the Chinese medicinal composition provided by the invention can eliminate diseases in patients and promote physical and psychological health of patients, have the actual characteristics of allowing patient to take conveniently, along with low treatment free, quick treatment effect, no side effect and remarkable psoriasis treatment effect, and is obviously improved.