The formula of Fuxueyuan Tang consists of ripe aconite, Huanglian, licorice, Maimendong, ginseng, schizandra, Zhimu, peony, and tung poo. Fuxueyuan Tang is mainly used to treat typhoid fever (a disease of fever caused by feeling cold) with too much sweating, weak lower element, rootless deficiency fire flooding the upper part of the body, slight heat, no headache, no bad cold (fear of cold), red face with slight thirst, eyes with no spermatite, incoherent speech, and pulse counting and feebleness, etc., which is known as Dai Yang (a manifestation of red cheeks and red cheeks caused by deficiency of yang qi floating in the upper part of the body) syndrome. This medicine needs to be decocted with ginger and jujube, and when taking it, add white onion, pound the juice and mix it, and take it warm. The contraindications to the use of Fuxuan Tang and the possible adverse reactions that may occur after the use of the drug are not clear at present, and the specific use of this drug should be carried out under the guidance of specialized physicians.