Patients with Helicobacter pylori can have sex, because Helicobacter pylori does not spread through sexual behavior, and its main mode of transmission is oral and fecal oral transmission. 1. Oral transmission: Helicobacter pylori can be parasitized in the human mouth, so when eating out or eating with others, if the tableware is not strictly disinfected, or the person who shares the meal is infected with Helicobacter pylori and does not use the communal chopsticks, it will be easy to be infected with Helicobacter pylori, and secondly, when kissing, the exchange of saliva will also be very easy to be infected with Helicobacter pylori. 2. Fecal-oral transmission: H. pylori reproduces in the stomach and then leaves the body with the food residue. H. pylori can still survive in a cold and humid environment, and when H. pylori contaminates water and food, it can lead to H. pylori infection if the patient mistakenly consumes or eats such food. Sex does not cause H. pylori infection, so patients with H. pylori can have sex.