H. pylori is a special type of bacteria that can survive in a strong acidic environment in the stomach. H. pylori infection in the stomach can lead to damage to the gastric mucosa, forming erosive gastritis, gastric ulcers, duodenal ulcers, and can even induce gastric cancer, so clinically, once tested positive for H. pylori, standard anti-H. pylori treatment should be performed immediately. However, after treatment is completed, attention should be paid to prevent re-infection with H. pylori because H. pylori can be transmitted through oral-oral and fecal-oral channels. Therefore, public meals should be reduced, especially with H. pylori-positive comrades, and utensils should be strictly disinfected.