The medication course for chronic erosive gastritis is 2-4 weeks, following the doctor’s instructions. The cause of chronic erosive gastritis is unknown, often triggered by Helicobacter pylori infection, immune abnormalities, etc. The main symptoms include abdominal pain, abdominal distension, belching (burping), acid reflux, vomiting of blood, black stools, etc. Gastroscopy can be observed on the gastric mucosa with varying sizes of erosions, flat wart-like elevations, etc. The presence of chronic erosive gastritis may cause abnormal epithelial hyperplasia and even induce gastric cancer. The persistence of chronic erosive gastritis may cause abnormal epithelial hyperplasia and even induce gastric cancer, so it needs to be actively treated with acid-suppressing drugs such as omeprazole routinely. If combined with Helicobacter pylori infection need to use a quadruple method that is a proton pump inhibitor such as omeprazole + a bismuth such as colloidal bismuth + two antibiotics such as amoxicillin, clarithromycin for eradication treatment. Eradication of H. pylori treatment is repeated with a breath test 1 month after stopping the medication. The course of treatment is usually 2-4 weeks, as prescribed by the doctor. Patients with celiac gastritis combined with atypical hyperplasia or intraepithelial neoplasia need to have repeat gastroscopy and long-term observation and follow-up after treatment according to the specific conditions. As chronic erosive gastritis may lead to gastric cancer and other serious complications, it is recommended that patients strictly follow the doctor’s instructions.