Pharyngitis and bronchitis can be differentiated by clinical manifestations and auxiliary examinations. 1. Clinical manifestations: (1) The early symptoms of pharyngitis and bronchitis are more similar, the clinical manifestations of pharyngitis are obvious congestion of the mucous membrane of the pharyngeal wall, the gradual emergence of sore throat, dysphagia, paroxysmal cough with little sputum or even dry cough, and there is no abnormal respiratory sounds on lung auscultation; (2) The clinical manifestations of bronchitis are prolonged and recurrent cough, cough with sputum, cough more frequently, there will be chest tightness, shortness of breath and other symptoms, lung auscultation appears scattered dry, wet rales, coughing after reducing or disappearing. 2. Auxiliary examination: chest X-ray can show no abnormal pharyngitis, bronchitis lung texture thickening. When patients suspect that they have a respiratory tract infection, and the symptoms are obvious, they need to go to the hospital in time.