Prevention of Helicobacter pylori can be prevented through hygiene prevention, dietary prevention and regular medical checkups. 1. Hygiene prevention: Helicobacter pylori can be transmitted through the fecal-oral route, so it is very necessary to do a good job of personal hygiene, wash your hands before and after meals, pay attention to maintaining oral hygiene, usually share meals, do not share tableware and personal household items, children do not feed their mouths, and so on. 2. Dietary prevention: Helicobacter pylori can be transmitted through the oral cavity, so it is important to try to do meal portioning, eat cooked food, and peel fruits and vegetables as much as possible, which can effectively prevent infection or cross-infection. 3. Regular medical checkups: If a family member is infected with Helicobacter pylori, try to have regular medical checkups, so that early detection, early diagnosis and early treatment can be achieved. The prevention of Helicobacter pylori is reflected in all aspects of life, if once found to have Helicobacter pylori infection, must go to the hospital in time for examination and treatment.