Chronic bronchitis exists, but before treating it, we must first have a correct understanding of the disease. Chronic bronchitis is a long-term illness that can have a slow onset and may last for decades, with the possibility of acute exacerbations throughout one's life. Moreover, there is no cure for chronic bronchitis yet. Currently, the treatment for patients with chronic bronchitis mainly depends on the stage of the disease and its symptoms. Most of the time, patients are in the remission phase. The primary treatment during this phase involves addressing risk factors. For instance, patients who smoke must quit smoking, as most patients experience significant relief from cough and phlegm after quitting. Additionally, patients with a history of dust exposure or harmful gas exposure should avoid further contact as much as possible. Furthermore, when the condition is stable, patients may engage in physical exercise to improve their physical condition and prevent colds. A small number of patients may experience respiratory infections and repeated aggravations, in which case, consider using immunomodulators or traditional Chinese medicine as adjunctive therapies. Patients with chronic bronchitis may experience acute exacerbations of their condition, meaning an increase in cough and phlegm, or the appearance of purulent sputum that is difficult to expectorate. In these cases, the main treatment method is still anti-infection therapy. Commonly used anti-infection medications include quinolones, macrolides, and cephalosporins. Some patients may experience frequent and severe cough and phlegm, and have difficulty expectorating the mucus. In such cases, mucolytic and cough suppressant medications are required for symptomatic treatment, commonly using drugs such as ambroxol, bromhexine, and eucalyptus menthol. A few patients may also experience wheezing, known as asthmatic bronchitis, which may require the use of anti-asthmatic medications such as aminophylline and various nebulized medications. (Note: The use of specific medications should be under the guidance of a doctor.)