Atrophic gastritis c1 active stage is more serious. Atrophic is the destruction of the gastric mucosa caused by chronic inflammation, which has extended to the glands, leading to a decline in their function and a decrease in their number.C1 is the mildest type of lesion in atrophic gastritis, and the possibility of heterotrophic hyperplasia is relatively small. The active phase is in the acute phase, this period of time patients will show abdominal pain, abdominal distension, nausea and other symptoms, usually more serious, need to be timely treatment. When in the c1 active phase of atrophic gastritis, the patient’s symptoms can be relieved and the progression of gastric mucosal inflammation can be slowed down by eradicating Helicobacter pylori (omeprazole, lansoprazole, etc.), protecting the gastric mucosa (colloidal bismuth, thioglycollate, etc.), and antibiotics (amoxicillin, clarithromycin, etc.) and other medications. As atrophic gastritis has the possibility of progressing to gastric cancer, patients need to undergo regular examinations such as e-gastroscopy and mucosal pathology examination, and medications should be administered in strict compliance with the doctor’s instructions.