Helicobacter pylori generally does not survive on dishes for more than 90 minutes. Helicobacter pylori is a bacterium that resides in the human body, and humans are the only source of infection, which can be spread through fecal-oral and oral-oral routes. H. pylori generally does not survive for more than 90 minutes if it remains on dishes. H. pylori can resist the killing effect of stomach acid through the enzyme urease, and its multiplication in the stomach may cause gastritis, peptic ulcers, and stomach diseases such as stomach cancer. In addition to eating together, eating contaminated food, water and kissing can lead to the transmission of H. pylori. Using communal chopsticks and paying attention to food hygiene in daily life can effectively reduce the chances of H. pylori infection. When someone close to you develops H. pylori infection, it is recommended to go to the hospital for screening, and if infection occurs, it is necessary to carry out sterilization treatment in a timely manner under the guidance of a professional physician.