Prevention of Helicobacter pylori infection mainly requires attention to diet, life hygiene, etc., to cut off the transmission pathway. Helicobacter pylori infection is the main cause of chronic gastritis, gastric ulcer and duodenal ulcer, and is closely related to the occurrence of gastric cancer and gastric mucosa-associated lymphoid tissue lymphoma, so the prevention of Helicobacter pylori in daily work and study life is very necessary. Currently, H. pylori is mainly transmitted from person to person through the oral-oral route and fecal-oral route. Therefore, if you eat or kiss with someone who has H. pylori, you have a certain chance of getting infected with H. pylori. It is best to share meals, use chopsticks, avoid eating in public cafeterias where people congregate and where hygiene is not up to par, and inform your family and friends when you have H. pylori to avoid infecting others with active H. pylori. There is no need to be afraid of being infected with H. pylori, the treatment of H. pylori is mainly based on bismuth + proton pump inhibitors such as omeprazole + 2 antibiotics such as amoxicillin and metronidazole, as long as you follow the doctor’s instructions to adhere to the treatment, generally will get good control.