Helicobacter pylori is a micro aerobic bacterium and can generally be killed at 100℃ for about 10min. However, some special H. pylori bacteria need to be killed at 120℃ for more than 15 minutes. Because H. pylori belongs to micro aerobic bacteria, easy to inactivate or lethal. Normally around 100℃ can basically kill it. Therefore, routine sterilization of dishes by boiling water at high temperature can kill H. pylori. H. pylori infected people should separate dishes from family members, disinfect them in time, pay attention to hygiene in eating, and avoid eating unclean food and unclean water. Some special strains of H. pylori, which are mutable and heat-resistant, can only be killed by reaching 120℃ for more than 15min. Helicobacter pylori is contagious, with oral-oral and fecal-oral transmission routes, and there is a phenomenon of family aggregation. It is important to reduce eating out, sterilize tableware, eat separate meals, and use communal chopsticks and spoons to help cut off the transmission pathway. If Helicobacter pylori infection is suspected, it is recommended to consult a doctor in time and avoid self-medication to avoid adverse reactions.