Urticaria is called addiction rash in Chinese medicine, Xiao Chaihu Tang has the effect of dredging the liver and stomach, relieving the surface and dispersing heat, some literature suggests that Xiao Chaihu Tang has a certain therapeutic effect on addiction rash, but it has not yet been confirmed by the authority. Xiao Chaihu Tang is composed of ginger, ginger and half-summer, jujube, licorice, scutellaria, chaihu and ginseng, and can be used to treat cold and heat exchanges (the body is hot and cold), fullness in the chest and ribs, heartburn, dry throat and bitter mouth, and poor appetite after the evil qi violates the shaoyang in external diseases. The contraindications and adverse effects of Xiao Chai Hu Tang are unclear, and it is contraindicated in cases of Yin deficiency and blood deficiency. Although there is literature suggesting that the application of Xiao Chaihu Tang may be effective in the treatment of addictive rashes, there is no definitive authoritative information to confirm that it is not recommended to take Xiao Chaihu Tang on one’s own after the appearance of addictive rashes. Urticaria patients are recommended to timely hospital consultation, under the guidance of doctors to identify the evidence of treatment, not self-medication.