The symptoms of coughing when cold air conditioning is blown are commonly caused by reflex coughing due to airway stimulation by cold air, especially in patients with chronic airway diseases such as asthma, who have high airway sensitivity and are more likely to cough when exposed to cold air. Overall, there are infectious and non-infectious factors that cause respiratory disorders because of the inflammatory response in the patient’s airways. Infectious factors can be seen in bronchitis and pneumonia caused by pathogenic infections such as viruses, bacteria, and mycoplasma, with acute attacks of chronic bronchitis and acute bronchitis. In addition, non-infectious factors are mainly the contraction and spasm of bronchial smooth muscle after stimulation by cold air, congestion and edema of the mucous membrane, and the lumen of the airway becomes relatively narrow, and at this time, coughing occurs to varying degrees, and a significant hyperresponsiveness of the airway is induced as soon as cold air is inhaled.