The invention discloses a traditional Chinese medicine for treating parapsoriasis which is prepared from Chinese herbal medicines such as fistular onion leaves, herba elsholtziae, azoila imbricate, dunn wampee leaf roots, chloranthus japonicus, schisandra incarnata, asarum splendens, multicaulis, oriental mistletoe, seseli mairei wolff, vicia hirsuta, coriandri fructus, negundo chaste tree leaves, solidago virgaurea, honewort roots, catmint, wild cimicifuga, yellow as arum and forest gray gum leaves. The traditional Chinese medicine is prepared from purely natural Chinese herbal medicines serving as the raw materials, can treat both symptoms and root causes, is definite in treating effect and does not have toxic or side effect, and the parapsoriasis is not liable to reoccur.