Helicobacter pylori generally refers to Helicobacter pylori, positive is more important, Helicobacter pylori infection may lead to gastric ulcer, gastric cancer and other lesions. H. pylori usually enters through the mouth, most of which can be killed by gastric acid, and part of which can be colonized in the stomach. It can cause damage to the gastric mucosa by releasing endotoxin and other substances, which can lead to gastritis, gastric ulcers, and even gastric cancer and other lesions, and therefore needs to be treated in time. People who are positive for H. pylori need to be treated with a combination of a proton inhibitor + two antibiotics + a gastric mucosal protector. Omeprazole is a commonly used proton pump inhibitor, amoxicillin and metronidazole are commonly used antibiotics, and bismuth potassium citrate is used as a gastric mucosal protector. Drugs need to be applied under the advice of a doctor, test positive Helicobacter pylori should go to the hospital in time for standardized diagnosis and treatment.