Chronic flat erosive gastritis treatment modalities include: allopathic treatment, symptomatic treatment, endoscopic treatment and so on. 1. Allopathic treatment: For example, for chronic gastritis caused by Helicobacter pylori infection, eradication treatment can be adopted, and clinically commonly used combined treatment program, i.e., the joint application of two antibiotics (e.g., amoxicillin, clarithromycin, metronidazole, etc.), proton pump inhibitors (e.g., omeprazole, pantoprazole, rabeprazole, etc.), and bismuth (e.g., colloidal bismuth in pectin, etc.) is used to carry out treatment. 2. Symptomatic treatment: Proton pump inhibitors such as omeprazole can be used in case of excessive gastric acid, pancreatic enzymes can be used in case of indigestion to promote digestion, and prokinetic drugs such as domperidone can be used in case of insufficient gastric power. 3. Endoscopic treatment: it is suitable for patients with chronic gastritis who have complications such as gastric bleeding or precancerous lesions such as gastric mucous membrane metaplasia. The treatment of chronic flat erosive gastritis requires long-term management and regular review to avoid the development of gastric cancer. It is recommended that patients should consult the gastroenterology department in time and choose a reasonable treatment plan under the guidance of doctors. Patients with chronic flat erosive gastritis are advised to go to the hospital and have their treatment plan formulated by a professional doctor.