Bronchitis, a disease commonly seen in clinical settings, often causes symptoms of coughing, and some cases may present with paroxysmal spasmodic coughs. Some patients may also experience increased phlegm, leading to symptoms like spitting phlegm, difficulty breathing, sore throat, and chest pain as complications. Generally, a physical examination is needed, along with a chest X-ray, complete blood count, C-reactive protein, and other auxiliary tests for diagnosis. It is timely to choose the appropriate antimicrobial medication and cough suppressant and expectorant drugs for symptomatic treatment.