After gastroscopy, you will be told by the doctor that you need to review, but the interval of gastroscopy review varies depending on the type of lesion. I. People with gastritis and related lesions Chronic superficial gastritis (chronic non-atrophic gastritis), gastroscopy review depends on the symptoms and changes in the condition. Second, those with chronic atrophic gastritis pathologically diagnosed as mild atrophic gastritis are generally reviewed at 5-year intervals. For those with moderate atrophic gastritis, the interval is 3 years. Those with severe atrophic gastritis should be reviewed at 1-year intervals. If gastroscopic pathological examination reveals mild heterogeneous hyperplasia of the gastric mucosa, it is generally recommended to review it in about six months, and the review time can be appropriately extended for those with mild heterogeneous hyperplasia and stable lesions found in multiple examinations. Those with moderate heterogeneous hyperplasia are generally recommended to be reviewed within 3 months; those with severe heterogeneous hyperplasia need to be scheduled for review as soon as possible. Moderate and severe heterogeneous hyperplasia are precancerous lesions and require treatment under gastroscopy to remove the hyperplastic area. Gastric ulcer It is recommended to review and take mucosal biopsy pathology in 4~8 weeks of treatment. Duodenal ulcers with bleeding and perforation complications should be reviewed 4-8 weeks after treatment to confirm ulcer healing. Those with simple ulcers without complications and who have eradicated H. pylori do not need to be reviewed regularly. V. Barrett’s esophagus is generally reviewed in 1 year, and the interval of review for those with heterogeneous hyperplasia is the same as that for those with heterogeneous hyperplasia of the gastric mucosa. Therefore, how often gastroscopy is appropriate depends on the type of lesion and needs to be carried out according to medical advice, too frequent or not paying attention to the review is a wrong practice.