Cough with white sputum after blowing cold wind can be seen in the upper respiratory tract infection, acute trachea – bronchitis, allergic cough. 1. Upper respiratory tract infections: mostly viral infections, often caused by cold, temperature changes when the respiratory defense function decreases, the main manifestations of nasal congestion, runny nose, dry throat, pharyngeal itching, coughing, with or without coughing sputum and other symptoms. 2. Acute trachea – bronchitis: common causes include bacterial and viral infections, cold air, dust stimulation and other factors caused by the trachea, bronchial mucosal acute injury and inflammatory reaction. The main symptoms are coughing, coughing up sputum, coughing up white sputum and other symptoms, if there is bacterial infection, yellow sputum or pus sputum can appear. 3. Allergic cough: often due to high airway sensitivity, in contact with allergens or cold air, can induce airway inflammatory response, cough, cough sputum, can be manifested as irritating dry cough or cough white sputum and other symptoms. Cough with white sputum after blowing cold air can also be caused by other causes, if the symptoms do not ease or aggravate, it is recommended to go to the respiratory department of the regular hospital in time to clarify the cause of the disease to give standardized treatment.