The efficacy of Ambroxol Hydrochloride Syrup is mainly to promote the expulsion of sputum, the specific use of medication as prescribed by the doctor. Ambroxol Hydrochloride Syrup is a mucolytic agent, which can increase the secretion of mucosal plasma glands, reduce the secretion of mucosal mucous glands, reduce the viscosity of sputum, and increase the movement of bronchial cilia, and ultimately make sputum easier to cough up, and is suitable for use in acute and chronic respiratory diseases accompanied by the secretion of sputum is abnormal and sputum discharge dysfunction. Contraindications to the use of the drug include known hypersensitivity to the product. Mild upper gastrointestinal adverse reactions such as heartburn, dyspepsia, nausea and vomiting may occur after administration. Specific medication should be administered under the supervision of a specialist.