It's possible. If one party has Helicobacter pylori infection, it may be transmitted to the other party through kissing. But that doesn't mean you will definitely get gastritis or gastric ulcer. Whether you can get sick depends on whether the pathogenic ability of the bacteria is strong or not, and whether the human resistance is strong or not. Viruses are highly pathogenic and people's resistance is weak, so the probability of getting sick is very high! Of course, don't panic even if you are infected. Gastritis or gastric ulcer caused by Helicobacter pylori can be cured! Speaking of prevention, living a regular life, eating less raw food and exercising more. If people have strong resistance, they will naturally not get sick easily!