Gastrointestinal chemosis suggests a repeat gastroscopy around 1-2 years. Gastrointestinal chemosis includes mild gastrointestinal chemosis, moderate gastrointestinal chemosis, and severe gastrointestinal chemosis. For mild and moderate gastrointestinal chemosis, it is generally recommended to review the gastroscopy about 1-2 years, but usually need to actively use gastric mucosal protectant and other medication, such as: magnesium aluminum carbonate, bismuth potassium citrate, etc.. For severe gastrointestinal chemosis or with atypical hyperplasia, it is recommended to review gastroscopy about half a year – 1 year. The severity of the condition of gastrointestinal metaplasia is different, and there is also variability in the time of review. Gastroscopy review is mainly to understand the changes in the condition, and if necessary, take out the tissue to do pathological examination, to clarify the specific nature of its.