Common symptoms of chronic gastritis include upper abdominal distension and pain, belching, acid reflux, nausea, vomiting, heartburn, poor appetite, indigestion, and feelings of fullness after eating. Gastroscope examination can reveal signs like reddening, swelling, and erosion of the gastric mucosa, which can be diagnosed as chronic superficial gastritis. If there is glandular atrophy of the gastric mucosa observed, a diagnosis of chronic atrophic gastritis can be made through a biopsy. Treatment options include acid suppression and gastric protection, promoting gastric motility, and protecting the gastric mucosa. It is also recommended to perform a Carbon-14 breath test to determine the presence of Helicobacter pylori infection. If the infection is positive, eradication treatment for Helicobacter pylori is necessary. Chronic atrophic gastritis has a certain risk of turning cancerous, so it is advised to follow a diet that is light and easy to digest.