Mild enterosis on gastric sinus biopsy indicates the presence of intestinal epithelial hyperplasia in the mucosa at the gastric sinus, but the degree is mild and requires prompt treatment. Enterocytosis refers to intestinal epithelial hyperplasia, and the presence of enterocytosis at the gastric sinus indicates that the epithelial cells of the gastric mucosa at the gastric sinus have been replaced by the epithelial cells of the mucosa of the small intestine or the large intestine, which can be classified as mild, moderate and severe according to the severity of enterocytosis. Mild enterosis is defined as enterosis occupying less than 1/3 of the glands and epidermis, moderate when the percentage reaches 1/3 to 2/3, and severe when it reaches more than 2/3. The most important factor causing enterochemistry of the gastric sinus mucosa is usually Helicobacter pylori infection, which may also be associated with smoking, alcoholism, and a high-salt diet. Patients with mild intestinalization mostly do not have obvious clinical manifestations, and some patients may also show epigastric discomfort, belching, heartburn and other discomforts. Intestinal epithelial hyperplasia has a certain tendency to become cancerous, therefore, if a patient finds mild intestinalization of the gastric sinus during the examination, it is recommended to consult a doctor in time and receive treatment actively so as not to delay the condition.