H. pylori infection should be registered in the Department of Gastroenterology, but if it induces gastric cancer, anemia and other related diseases, you can go to the Department of Oncology and Hematology respectively. Helicobacter pylori is a kind of spiral, gram-negative, micro aerobic bacteria, the infection site is mainly in the stomach, belongs to the gastrointestinal pathogen, Helicobacter pylori infection can induce gastritis, gastric ulcer and other gastrointestinal diseases, which can cause epigastric pain, abdominal distension, nausea, vomiting, acid reflux, belching, loss of appetite and other gastrointestinal symptoms, the patient should consult with Gastroenterology Department in time. If Helicobacter pylori infection for a longer period of time, gastric mucosa cancer, the progress of the disease deterioration of gastric cancer, you can also hang oncology department for consultation. Helicobacter pylori infection is also related to iron deficiency anemia, idiopathic thrombocytopenic purpura and other diseases, when the patient has weakness, pallor and other symptoms of anemia, bleeding spots on the body, bruises, renal impairment of purpura and other symptoms, you can also hang up the Department of Hematology for consultation.