Belching after meals is caused by reflux esophagitis, indigestion, gastric prolapse, gastritis, and gastric ulcer. In people with reflux esophagitis, after eating food, the food irritates the gastric glands and therefore causes excessive secretion of gastric acid, which can violate the esophageal mucosa. People with reflux esophagitis not only experience belching after meals, but also burning and pain in the sternal area. When indigestion occurs, the food in the stomach is not expelled in time, so it reacts with digestive juices and produces a lot of gas. Excessive gas causes irritation to the stomach lining, resulting in increased pressure in the stomach, and therefore belching after meals. In people with gastric prolapse, the presence of food after a meal can cause the symptoms of prolapse to worsen and affect the peristaltic function of the stomach. Since the stomach is unable to digest and empty the food through peristalsis, it can induce belching after meals. Some people suffer from diseases such as gastritis and gastric ulcer, which affect the emptying of food and cause spasms and contractions in the stomach wall when exposed to stomach acid, making belching after meals more likely.