Children cough when the air conditioning is turned on, usually with the temperature change stimulation and other physiological factors, as well as allergic cough, upper respiratory tract infections and other pathological factors have a relationship. 1. Physiological factors: the child a turn on the air conditioning on the cough may be due to temperature changes in the children’s respiratory system to produce stimulation, and then cough symptoms, this situation is usually a normal physiological response. 2. Pathological factors: If the air conditioning cleaning is not timely, it is easy to cause the accumulation of microorganisms, when the air conditioning may lead to allergic coughing; upper respiratory tract infections may also lead to children coughing when the air conditioning is on, usually accompanied by a runny nose, fever and other symptoms. Children turn on the air conditioning cough, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to determine the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.