Bronchitis refers to inflammation that occurs in the mucosa and surrounding tissues of the bronchi, including acute bronchitis and chronic bronchitis. For mild bronchitis, there is no need for infusion therapy, i.e. hanging water, so there is no question of what is good to use. For moderate to severe bronchitis, the specific drugs used for infusion will depend on the specific symptoms and condition. Specifically, if there is bacterial infection, penicillin or cephalosporin antibiotics can be used; if there is allergy to penicillin and cephalosporin antibiotics, macrolides, such as azithromycin or artificial quinolones, such as levofloxacin, can be used. If the cough is accompanied by obvious thick sputum that cannot be easily coughed up, phlegm-suppressing drugs, such as amiloride hydrochloride, can be used; if there is obvious chills and high fever, supplemental isotonic saline is needed; if accompanied by wheezing symptoms, asthma-calming drugs, such as theophylline and glucocorticoids, can be used according to the situation. Therefore, whether to infuse bronchitis and what drugs to use for infusion should be decided and selected by the doctor according to the specific situation.