Acid reflux water may be due to physiologic factors (emotions, diet) or pathologic factors (reflux esophagitis, gastritis, peptic ulcer, etc.). 1. Physiological factors (1) Emotions: Excessive mental tension, anxiety, and stress can affect the normal function of the stomach, leading to an increase in gastric acid and causing acid reflux. (2) Diet: For example, eating too much acidic food or sweet food will stimulate excessive secretion of stomach acid and cause acid reflux. 2. Pathologic factors (1) Reflux esophagitis: the main cause of the disease is the weakening of the anti-reflux barrier, esophageal clearance, and esophageal mucosal barrier. Typical symptoms are heartburn, heartburn, acid reflux and so on. (2) Gastritis: gastric mucosal damage congestion, inflammatory state, gastric acid secretion is more, causing acid reflux, nausea, stomach pain and other symptoms. (3) Peptic ulcer: destruction of the protective barrier of the gastric mucosa, the presence of ulcer surfaces, increased secretion of gastric acid, causing acid reflux, heartburn, nausea, stomach pain and other symptoms. Acid reflux may also have other causes, such as gastric cancer, esophageal cancer, etc. It is recommended to consult a doctor to find out the cause of the disease and follow the doctor’s instructions for treatment.