Chest pain that gets better when you drink water may be caused by esophageal reflux disease, esophageal obstruction, and other diseases. 1. Esophageal reflux disease: the lower esophageal sphincter relaxes, causing stomach acid to easily stimulate the esophagus, thus causing chest pain, drinking water can reduce the stimulation of stomach acid, thus relieving the symptoms of chest pain. 2. Esophageal obstruction: due to esophagitis, food obstruction and other reasons, caused by esophageal obstruction, induced chest pain, drink water to relieve the gastric acid reflux, consumption of high temperature food caused by esophagitis, so as to alleviate the symptoms. 3. Other diseases: patients suffering from lung and pharyngeal diseases, induced chest pain, after drinking water, reduce the inflammatory reaction of the original disease, so as to appear better. Chest pain is recommended to go to the hospital in a timely manner, and the cause of the disease after symptomatic treatment.