H. pylori is treated with quadruple therapy. Quadruple therapy, as the name suggests, is a combination of four drugs, including two antibiotics, a proton pump inhibitor plus a bismuth agent. Omeprazole and lansoprazole are the most commonly used proton pump inhibitors; common antibiotics include metronidazole, furazolidone, amoxicillin, clarithromycin, etc.; bismuth potassium citrate and bismuth pectin are commonly used bismuth, which is a kind of gastric mucous membrane protector. Quadruple therapy can improve the eradication rate of H. pylori, so it is generally used for the eradication of H. pylori. For Helicobacter pylori infection, the treatment varies with different physical conditions of the patients and different stages of the disease, and the patients should undergo standardized treatment under the guidance of doctors.