Ambroxol Hydrochloride and Pulmonary Cough Compound are both oral medications for expectoration, and there is still a difference between the two. Ambroxol hydrochloride is a kind of western medicine containing ambroxol as the main ingredient, which can make the phlegm become thin and dilute the phlegm, and can also promote the cilia movement on the airway mucous membrane wall, which can promote the continuous discharge of phlegm, and can be used for respiratory inflammation with relatively thick and phlegm, and the discharge of phlegm is not smooth. Lung Li Cough is a traditional Chinese medicine formula, containing a very large number of Chinese medicinal ingredients, including Scutellaria baicalensis, Radix et Rhizoma Pinelliae, Radix et Rhizoma Gentianae, Radix et Rhizoma Gentianae, and so on, which does not contain any western medicinal ingredients, and it mainly has the efficacy of clearing away heat and detoxifying toxins and stopping cough and expectoration, and can be used for the symptomatic relief of coughs caused by lung heat and the sputum is yellow in color.