There are many reasons for coughing in the cold air, commonly found in cough variant asthma, eosinophilic bronchitis, acute pharyngolaryngitis and so on. 1. Cough variant asthma: the main symptom of cough variant asthma is coughing, for patients, coughing in the cold air is the cold air on the airway caused by the stimulation caused by. 2. Eosinophilic bronchitis: eosinophilic bronchitis is also one of the causes of cold air cough, patients can follow the doctor’s instructions to use glucocorticoids for treatment. 3. Acute pharyngolaryngitis: acute pharyngolaryngolaryngitis is caused by acute inflammatory lesions in the throat area, cold air inhalation will stimulate the throat, which will naturally cause coughing. There are many reasons for coughing in the cold air, it is recommended to go to the hospital in time to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.