Sagan Ephedra Soup and Xiaoqinglong Soup both have the function of relieving symptoms and resolving drinks, but there are differences in drug composition, efficacy and indications. 1. Composition: Sagan Ephedra Soup is an expectorant, from “The Essentials of the Golden Chamber”, which is composed of Sagan, ephedra, ginger, fine Xin, aster, schizandra, schizandra, jujube, Fenghuanghua, and Hanxia. Xiaoqinglong Tang is an antidepressant, from the Treatise on Typhoid Fever, with the composition of ephedra, paeoniae lactiflora, fine acrid, dry ginger, licorice, cinnamon sticks, schizandra, and half-summer. 2. Effects: Jie Gan Ephedra Soup has the effects of warming the lungs and resolving fluid (promoting the flow of stagnant fluid by warming the lungs), and lowering Qi and expelling phlegm. Xiaoqinglong Tang has the effects of warming the lungs, resolving drinks, detoxicating the surface and dispersing cold (removing cold from the surface of the muscles). Xiaoqinglong Tang is strong in relieving the surface and dispersing the cold, and its function favors the treatment of the surface; Sjogang and Ephedra Tang is strong in dispelling phlegm and lowering qi, and its function favors the treatment of the interior. 3. Indications: Sagan Ephedra Soup is mainly used for treating cold and phlegm in the lung and throat, symptoms include cough, shortness of breath, water chicken sound in the throat, fullness in the chest and diaphragm, etc. Sagan Ephedra Soup is not suitable for people with lung-heat and phlegm. Xiaoqinglong Tang is mainly used for treating external cold and internal drinking, symptoms include cold fever, headache, body pain, cough and wheezing, swelling of the head, face and limbs. Yin deficiency dry cough without phlegm or phlegm heat should not take Xiao Qing Long Tang. 4. Summarize: the evidence of Xiaoqinglong Tang is that wind-cold is mild, phlegm and drink (pathological products formed by impaired metabolism of water and fluid) are stagnant, and the lung qi is more rebellious; therefore, on the basis of Xiaoqinglong Tang, reduce cinnamon sticks, peony and licorice; add in the expectorant and purging of phlegm to stop coughing and calm wheezing (stopping coughing and calming wheezing) of Sagittarius, Fengyuanhua, Ziqianhua and other medicines. The medication should be taken in accordance with the doctor’s prescription, and should not be taken without authorization.