Yao medicine composition used for chronic urticaria and preparation method and external preparation thereof

The invention relates to the field of Yao medicines, and provides a Yao medicine composition used for chronic urticaria. The Yao medicine composition used for chronic urticaria is prepared from 1-5 parts of asiatic toddalia root and stem, 0.5-3 parts of radix celastri orbiculati, 0.5-3 parts of herba polygoni perfoliati, 0.5-3 parts of herba polygoni hastato, 1-5 parts of herba houttuyniae, 1-5 parts of herba hedyotidis, 0.5-3 parts of kadsura coccinea root or root bark and 0.5-3 parts of schiandra sphenanthera root and stem. According to the Yao medicine composition, medicine compatibility isconducted based on Yao doctor theories, the asiatic toddalia root and stem, the radix celastri orbiculati and the herba hedyotidis are used as main medicines, so that the efficacy of clearing away heat, removing toxicity, relieving swelling and removing itching is achieved; laxatives of the herba polygoni perfoliati, the herba polygoni hastato, the kadsura coccinea root or root bark and the schiandra sphenanthera root an