If there is a bacterial infection in the stomach, it means that it is Helicobacter pylori infection. Patients with Helicobacter pylori infection need to be treated with triple or quadruple therapy to eradicate Helicobacter pylori under the guidance of gastroenterologists, such as the triple therapy of PPI plus two antibiotics or the quadruple therapy of PPI plus two antibiotics plus bismuth. Specific drug selection and dosage of drugs, patients need to go to a regular hospital, in the gastroenterologist detailed medical history and review the relevant auxiliary examination, before giving medication, because not all H. pylori infections need to be treated with medication, the specifics of which can be consulted with a specialist.