Coughing when children drink cold water is considered to be due to high sensitivity of the throat, allergic cough, gastroesophageal reflux disease and other factors. 1. High sensitivity of the throat: The human throat is highly sensitive, and drinking cold water or eating cold food can stimulate the throat, resulting in a cough. 2. Allergic cough: the etiology is not clear, may be due to the existence of certain genetic defects in the child, resulting in increased sensitivity of the immune system, when stimulated by cold water, dysfunction occurs, cough. 3. Gastroesophageal reflux disease (GERD): If the child himself suffers from GERD, drinking cold water will aggravate GERD, leading to irritation of the pharynx by gastric contents and coughing. In addition, the combination of cardiovascular disease, lung tumors, tuberculosis, pneumonia and other diseases can also cause the child to drink cold water cough, it is recommended to go to the hospital in a timely manner to identify the cause of the disease, and then receive treatment as soon as possible.