Preventing H. pylori from infecting family members can start with managing the source of infection, cutting off the means of transmission, and protecting susceptible people. 1. Management of infectious agents: patients with H. pylori infection are recommended to use a proton pump inhibitor + a bismuth + two antibiotics quadruple therapy eradication under the guidance of a physician. Commonly used proton pump inhibitors are omeprazole, pantoprazole, etc. Commonly used bismuth agents are bismuth pectin, bismuth potassium citrate, etc. Commonly used antibiotics are amoxicillin, metronidazole, clarithromycin and so on. 2. Cut off the way of transmission: to avoid infecting family members, try to use a set of independent tableware, try to disinfect after use, do not place with family members’ tableware, and try to use public spoons and chopsticks. 3. Protect susceptible people: For people susceptible to Helicobacter pylori infection, try to cook the food they eat, pay attention to oral hygiene, develop good brushing habits, and strengthen physical exercise. If you have stomach discomfort and suspect that you have H. pylori infection, please go to the hospital in time for treatment.