It is perfectly fine to use saline alone and do nebulized inhalation therapy. Saline is mainly a 0.9% concentration of sodium chloride solution, which is similar to the concentration of human tissue fluid. For inflammatory reactions in the airway, such as acute upper respiratory tract infections, bronchitis, pneumonia, and even lung abscesses, there is a large amount of inflammatory secretions that exude and are relatively viscous, adhering to the airway and not easily discharged. At this time, you can choose to use saline nebulizer inhalation treatment alone, which can moisten the airway, so that the airway mucosa is not too little water, but can make the inflammatory secretions attached to its surface relatively thin, and can be easily discharged out of the body.