Atrophic gastritis is generally treated with biopsy, which is the standard for diagnosing atrophic gastritis, so biopsy is typically conducted when considering atrophic gastritis. Atrophic gastritis is increasingly common in clinical settings, especially among middle-aged and elderly patients. It begins with symptoms of chronic gastritis, such as abdominal pain, bloating, nausea, and belching, and sometimes may include changes in appetite. Patients usually undergo gastroscopy, which shows atrophy of the gastric mucosa, alterations in red and white patches, or white-like mucosa. Histopathological examination can further support the atrophic changes. In clinical settings, when considering atrophic gastritis, treatment focuses on protecting the stomach and screening for Helicobacter pylori. If Helicobacter pylori is positive, treatment targeting Helicobacter pylori is recommended. Regular gastroscopic examinations are necessary, typically every six months to a year.