(2) Abdominal pain: due to the damage to the mucosa of the stomach and duodenum, some patients may also experience recurrent severe abdominal pain and a small amount of bleeding from the upper gastrointestinal tract.　　(3) Acidosis: Helicobacter pylori induces a large secretion of gastrin, leading to excessive gastric acid, which manifests as acidosis and heartburn.　　(4) Other: fullness, discomfort or pain in the upper abdomen after eating, often accompanied by other adverse symptoms, such as warmth, bloating, acid reflux and loss of appetite.　　The following is a list of the most common symptoms of gastrointestinal disorders. Shanghai Tianlun Hospital Gastroenterology has authoritative diagnosis and treatment experts, advanced diagnosis and treatment equipment, mature and perfect diagnosis and treatment methods, reasonable layout, complete specialties, advanced equipment, with profound knowledge of medical theory, rich clinical experience of senior experts and scholars. Vigorously promote high-tech scientific research technology, the clinical application of international cutting-edge minimally invasive technology results, to achieve the gastrointestinal center of scientific research and clinical diagnosis and treatment level of leapfrog development, won the people's praise.