Atrophic gastritis is a chronic gastric disease characterized by repeated damage to the gastric mucosal epithelium, leading to the atrophy of the intrinsic glands, with or without intestinal metaplasia or pseudopyloric gland metaplasia. The main cause of this disease is infection by Helicobacter pylori. Symptoms primarily include upper abdominal distension, belching, acid reflux, early satiety, nausea, etc. Some patients may experience symptoms such as weight loss, fatigue, memory loss, anxiety, and depression. The main treatment involves eradicating Helicobacter pylori, suppressing acid production, and using gastric mucosal protectants and prokinetic agents. The majority of patients have Helicobacter pylori-related gastritis, which after chronic inflammation (chronic non-atrophic gastritis) can lead to atrophic gastritis, followed by intestinal metaplasia or dysplasia, and eventually may progress to gastric cancer.