The main function of this drug is to promote the elimination of sputum from the patient, to accelerate the formation of active ingredients in the respiratory system, to effectively mediate the secretion of serum and mucus in the body, to effectively reduce the attachment of sputum cilia in the patient’s body, to dilute the excess sputum in the body, to promote the rapid discharge of sputum, and thus to cure cough and sputum. In clinical work, the expectorant effect of Ambroxol is very obvious, and it can be used for the effective treatment of patients with chronic bronchitis or obstructive pulmonary disease, which is quite effective.