Drinking cold water and coughing may be a physiological phenomenon, but also may be the airway high reaction and other circumstances lead to. 1. Physiological phenomenon: when drinking cold water, choking on the airway, will produce a cough reflex, there is a short cough, this cough is a self-protection mechanism, do not have to be too nervous. 2. Airway hyperreactivity: If the phenomenon of drinking cold water and coughing always occurs, we need to be alert to the existence of airway hyperreactivity. The airway for the external stimulating factors, produce premature or too strong contraction reaction, can appear cough or even wheezing performance. If you often drink cold water and cough, you should consult a doctor in time, avoid being cold in daily life, avoid contact with pollen, dust mites and other foreign objects.