Radix Rehmanniae Ephedra Tang is a traditional Chinese medicine formula composed of Radix Rehmanniae Ephedrae, Radix Ephedrae, Radix Ginger, Radix Silybum Marianum, Radix Aster, Radix Dou Hua, Fructus Schisandrae, Radix Panax Notoginseng and Radix Ziziphi. The main effect is to warm the lung, relieve cough and asthma, and is mainly used to treat respiratory diseases. For example, chronic bronchitis, bronchial asthma, variant asthma, senile emphysema and obstructive emphysema, etc., are all directions for the treatment of eugenia ephedra soup. In clinical practice, it can be used as a nebulized inhalation or taken orally as an adjunct to the treatment of respiratory tract diseases. The application of Shengan Ephedra Tang should be carried out reasonably under the guidance of a doctor, mainly for patients with wind-cold colds with the most ideal effect. It should be applied with caution because the presence of ephedra can cause cardiac arrhythmias.