Saline nebulization refers to the treatment of nebulized inhalation with saline, which can effectively relieve cough caused by dryness in the respiratory tract. In addition, if there is a cough with phlegm, saline nebulization can help dilute the phlegm, which is easier to cough up after the phlegm has been thinned out and helps to recover from the cough. In addition to saline nebulization, the most effective way to treat cough and phlegm is to give appropriate medication for anti-inflammatory treatment according to the type of infection. In case of bacterial infections, antibiotics such as cefaclor or cefradine should be used for treatment. If a viral infection occurs, it needs to be treated with antiviral drugs, such as ribavirin, busulfan anti-inflammatory oral solution or blue scutellaria oral solution, which are all more effective. If the sputum dilution is not obvious after using saline nebulization, and it is not easy to cough up sputum, you also need to use sputum-reducing drugs for nebulized inhalation treatment, you can nebulize and inhale Ambroxol Hydrochloride.