After the treatment of gastric polyps, we should pay attention to several aspects. After endoscopic treatment of polyps, the gastric mucosa will be damaged to a certain extent, and local erosion may occur. Even if the polyps are large, ulcers may occur. Therefore, after polypectomy, we should choose digestible food, avoid irritating food and avoid drinking alcohol. You can also use gastric mucosal protective agents, such as oral omeprazole to inhibit gastric acid and oral aluminum phosphate gel to protect gastric mucosa. After polypectomy, local mucosal defect will lead to gastrointestinal bleeding, so try to avoid strenuous exercise within one week after operation, and the mucosa will recover in a week or so. There are also polyps that should be reviewed by gastroscope regularly according to the doctor's entrustment to make sure there is no recurrence.