Eosinophilic airway inflammation, or eosinophilic airway inflammation, generally refers to the infiltration of eosinophils into the airways, causing a chronic inflammatory response. 1. Generally, eosinophilic airway inflammation is seen in asthma bronchial, allergic pharyngolaryngitis and other diseases. Chronic irritating cough caused by eosinophil infiltration is a common clinical manifestation. Patients are more sensitive to some soot dust, foreign objects or cold air stimulation. 2. In addition to coughing, patients may also cough up sputum, chest tightness, shortness of breath and other symptoms. 3. Eosinophilic airway inflammation without timely treatment may cause dyspnea, decreased lung function and even respiratory failure and other adverse consequences. It is recommended that patients actively go to the hospital to improve the relevant examination and standardize the treatment.