The invention discloses a Chinese medicinal preparation for treating psoriasis and eczema. The Chinese medicinal preparation is prepared by processing a No.1 medicament and a No.2 medicament, wherein the No.1 medicament consists of virgate wormwood herb, Indian buead, skunk bugbane, baicalin, anemarrhena asphodeloides bunge, swordlike atractylodes rhizome, largehead atractylodes rhizome, oriental waterplantain rhizome, polyporus umbellatus, kudzu-vine root, lightyellow sophora root, root of red-rooted salvia, beautiful sweetgum fruit, garter snake, densefruit pittany root-bark, white paeony root, Chinese angelica and liquoric root; and the No.2 medicament consists of officinal magnolia bark, tuber fleeceflower root, Manchurian wildginger, prepared common monkshood mother root, prepared kusnezoff monkshood root, fineleaf schizonepeta herb, divaricate saposhnikovia root, szechuan lovage rhizome, incised notopterygium rhizome root, dendrobium, ephedra herb, scorpion, dahurian angelica root and radix glycyrrhizae preparata. The No.1 medicament and the No.2 medicament are dried or baked respectively, and are prepared into fine powder for encapsulation to prepare the Chinese medicinal preparation for treating psoriasis, namely a No.1 capsule and a No.2 capsule. The Chinese medicinal preparation has the advantages of convenient preparation, convenient carrying, convenient administration, low cost, no toxic or side effect and the like, and has excellent curative effect of treating psoriasis, eczema and the like.