Bronchitis is commonly caused by bacterial and viral pathogenic infections. For patients with bronchitis caused by viral infections, active antiviral therapy, such as oseltamivir, amantadine, etc., is commonly used in clinical practice, as well as oral Chinese medicines to clear heat and detoxify the toxins, such as Banlangen granules, Pudilan oral solution, etc. At the same time, only when the patient has a secondary bacterial infection, antibacterial drugs are selected for treatment. Therefore, for patients with bronchitis caused by viral infection, antiviral treatment should be carried out, and symptomatic treatment should be chosen according to the patient’s symptoms, such as oral cough suppressants and expectorants.