The difference between eosinophilic and non-eosinophilic bronchitis mainly lies in the pathogenesis, induced sputum examination, and treatment methods. 1. Pathogenesis: eosinophilic bronchitis: generally refers to allergic airway inflammation, but the bronchial provocation test is mostly negative (which can be distinguished from bronchial asthma); non-eosinophilic bronchitis: generally refers to bronchitis caused by bacterial infection, which can show bronchial mucosal congestion, edema and purulent secretion. 2. Induced sputum examination: eosinophilic bronchitis induced sputum examination increased eosinophil proportion (≥3%); non-eosinophilic is normal. 3. Treatment: eosinophilic bronchitis antibiotics are ineffective, can use anti-allergy drugs, such as loratadine, etc.; non-eosinophilic bronchitis generally use antibiotics, such as amoxicillin, etc.. It is recommended that patients go to the hospital in time, complete the relevant examinations under the guidance of professional doctors, and receive standardized treatment.