Most patients with H. pylori infection have no obvious discomfort, and some may experience abdominal pain, bloating, and loss of appetite. More than 70% of patients with H. pylori infection do not have any clinical symptoms, 10% to 20% may develop peptic ulcers, about 10% may develop functional dyspepsia, and about less than 1% may cause gastric cancer. In the presence of H. pylori infection, patients may present with chronic, rhythmic epigastric pain in periodic episodes that may progress to peptic ulcers, and some patients may present with mild gastrointestinal discomfort as a result of H. pylori infection associated with functional dyspepsia and gastroesophageal reflux disease. Helicobacter pylori infection may also present with gastric mucosa-associated lymphoid tissue lymphoma, unexplained iron-deficiency anemia, idiopathic thrombocytopenic purpura, gastric polyps, and so on. It is recommended that patients go to the hospital in a timely manner, under the guidance of the doctor, to conduct a detailed examination, according to the specific results of the examination, to take targeted treatment, life should be corrected bad dietary habits, pay attention to review.