Helicobacter pylori infection has been confirmed as the primary cause of chronic gastritis, peptic ulcers, and gastric cancer. Erosive chronic gastritis is a type of chronic gastritis, thus there is a certain relationship between erosive gastritis and Helicobacter pylori, but not all chronic gastritis is caused by Helicobacter pylori; some are, but others are not. Therefore, if erosive gastritis occurs, it is necessary to conduct a carbon-14 breath test to determine whether there is an infection of Helicobacter pylori. If the Helicobacter pylori infection is positive, a 14-day anti-Helicobacter pylori treatment should be administered. The treatment includes a proton pump inhibitor, two antibiotics, and a bismuth agent. After treatment, most of the Helicobacter pylori will convert from positive to negative.