Ambroxol injection is generally used in patients with poor sputum secretion or discharge, prevention of postoperative pulmonary complications, treatment of neonatal respiratory distress syndrome, and can be administered by intravenous, intramuscular injection, nebulized inhalation, etc., and needs to be used under the guidance of a professional physician. Ambroxol injection is a kind of expectorant drug, the main component is bromocyclic ethanolamine hydrochloride, which has good mucous phlegm dissolution and lubrication of the respiratory tract, and can promote the secretion of alveolar surface-active substances, and promote the movement of lung cilia. Clinically, it is mainly used in the treatment of such diseases as acute and chronic bronchitis resulting in poor sputum secretion or discharge, postoperative prevention of pulmonary complications, respiratory distress syndrome caused by poor lung development in newborns and premature infants. The drug is mainly administered intravenously, but can also be administered by intramuscular injection, nebulized inhalation, etc. The specific application needs to refer to the patient’s condition. Infants and young children need to use the drug according to the weight of the specific dosage, there are individual differences. It is forbidden to mix the drug with other drugs, and the speed of administration should be paid attention to when administering the drug by static injection, such as headache, fatigue and other adverse reactions may occur if the drip is too fast. The use of this drug needs to be under the guidance of a professional physician, so as not to lead to adverse consequences.