Excessive burping is commonly caused by swallowing too much air or digestive conditions. Common reasons include eating or drinking too quickly, consuming carbonated drinks, swallowing air during habits like chewing gum or smoking, and food intolerances such as lactose intolerance. Digestive disorders like acid reflux (GERD), gastritis, or Helicobacter pylori infection can also cause frequent burping. Additionally, psychological factors like anxiety can increase air swallowing. If burping is frequent and accompanied by other symptoms like pain or nausea, it may be worth consulting a healthcare provider for proper diagnosis and treatment.