There are many different pathological manifestations of chronic gastritis, mainly including inflammation, atrophy, intestinal and atypical hyperplasia, as follows: 1, inflammation, inflammatory cells infiltrate the gastric mucosa, including two types of cells, one is lymphocytes, all people have lymphocyte infiltration in the stomach, so most people have gastritis; the second is leukocytes, leukocytes can lead to acute gastritis; 2, atrophy, the number of gastric glands significantly reduced, or replaced by other glands , a sign of gastric aging; 3, intestinal epithelial metaplasia, where normal gastric glands are replaced by intestinal glands; 4, atypical hyperplasia, also called heterogeneous hyperplasia, is a cell proliferation when the cells are more deviated from normal cells, with a large gap, now called intraepithelial neoplasia. Severe atypical hyperplasia is a precancerous lesion and is a target that needs to be focused on and should be paid great attention to.