If patients experience heartburn when drinking water, there are usually several factors as follows: 1. Patients with digestive system diseases, such as reflux esophagitis, bile reflux gastritis, gastric and duodenal ulcers, acute gastroenteritis, in this case will have excessive secretion of gastric acid, so they will experience heartburn and acid reflux when drinking water. 2. Patients with some cardiogenic diseases, such as coronary artery disease, unstable angina pectoris, myocarditis, pericarditis, infective endocarditis or history of heart valves, will also have a series of symptoms of acid reflux and heartburn when drinking water. In some cardiogenic diseases, such as coronary artery disease, unstable angina, myocarditis, pericarditis, infective endocarditis or a history of heart valve disease, there will also be a series of symptoms of acid reflux and heartburn when drinking water. 3, in some cardiac neurosis, patients will also have varying degrees of conscious heartburn, acid reflux and regurgitation when drinking water.