Wu Feng San is a traditional Chinese medicine formula from “Surgical Zheng Zong”, which has the effect of dispersing wind and removing dampness, clearing heat and nourishing blood, and can be used to treat rubella, eczema and other diseases. The formula contains Chinese medicines such as Thornywort, Burdock, Cicada Shell, Fenghuang, etc., which have the effects of dispersing wind and dispersing evils and the efficacy of pungent dispersal and penetration, as well as Cangzhu, which dispels wind and dries dampness, Bitter Ginseng, which clears heat and dries dampness, Moutong, which seeps away dampness and heat, Gypsum and Zhimu, which clear heat and diarrhea, which clear heat and fire from the body. In addition, Hu Ma Ren, Radix Rehmanniae Praeparata and Radix Angelicae Sinensis are added to nourish and invigorate the blood, making this medicine improve rubella and eczema caused by wind-dampness or wind-heat invading the body. In rubella and eczema, itchy skin, reddish rash or cloud-like spots all over the body, and easy oozing of fluid after scratching are common. During medicinal use, avoid eating spicy, fish, strong tea, tobacco and alcohol. The use of wind dispersal, according to the patient’s actual condition can be added or subtracted, specific medication, need to be directed by a professional doctor to follow the doctor’s instructions.