Chronic atrophic gastritis c3 can be improved by using antacids such as omeprazole, gastric mucosal protectants such as bismuth potassium citrate, and regular review. 1.chronic atrophic gastritis c3 means atrophy has been close to the cardia, can be treated by taking drugs, commonly used drugs are antacids, such as rabeprazole, omeprazole, etc.; gastric mucosal protectants, such as bismuth potassium citrate, colloidal bismuth pectin. Chronic atrophic gastritis should also be tested for Helicobacter pylori, and if combined with Helicobacter pylori infection, amoxicillin and clarithromycin should also be used for anti-infection treatment. 2. chronic atrophic gastritis to develop good eating habits, avoid overeating, regular gastroscopy to avoid the appearance of heterogeneous hyperplasia, the use of medication please follow the doctor’s instructions. Atrophic gastritis is a pathological concept, there is no ideal drug to reverse it, and the only way to prevent cancer is to have regular gastroscopy review (one year), and if there is any heterozygous hyperplasia, repeat gastroscopy in three months. Patients with atrophic gastritis should be actively consulted, regularly reviewed, and standardized treatment as prescribed.