The bacteria that cause gastric cancer is mainly H. pylori. After H. pylori infects the stomach, it may lead to gastritis, such as chronic gastritis, acute gastritis, and also gastric ulcer, and may also lead to gastric cancer. If you want to treat the bacteria of gastric cancer, anti-H. pylori treatment is sufficient, commonly used is triple therapy, of course, it is possible to use quadruple therapy, there are relatively more drugs, for example, often use omeprazole combined with clarithromycin, combined with amoxicillin to carry out treatment. If there is damage to the gastric mucosa, lesions or chronic bleeding, you can also combine gastric mucosal protective agents, such as bismuth potassium citrate, magnesium aluminum carbonate or aluminum magnesium plus suspension, etc. can be.