Acid reflux is caused by improper diet, reflux esophagitis, gastric ulcer, indigestion and other factors. Eating spicy, irritating food or indigestible food in the diet can cause irritation to the gastric mucosa and at the same time lead to excessive secretion of gastric glands, and acid reflux will exist in the body when there is excessive secretion of gastric acid. During an attack of reflux esophagitis, the food in the stomach is more likely to reflux into the esophagus, causing damage to the esophageal mucosa. Many people suffer from heartburn and acid reflux as the main manifestation during the disease. When the protective barrier of the gastric mucosa is damaged and an ulcerated surface appears, the stomach acid will more easily invade the stomach wall, so the patient will experience acid reflux. The symptoms can be particularly pronounced especially in the period after eating food. In the case of indigestion, food can accumulate in the stomach because it cannot be eliminated in time. This not only causes some irritation to the gastric mucosa, but also stimulates excessive secretion of gastric acid thus leading to acid reflux symptoms.