Intestinal epithelial metaplasia refers to the transformation of gastric mucosal epithelium into a type of small and large intestinal mucosal tissue called Parnett cells or cup-shaped epithelial cells in chronic gastritis, which means that the gastric mucosal tissue appears as intestinal mucosal tissue, called intestinal epithelial metaplasia, and is more common in the elderly. Intestinal epithelial metaplasia is often combined with chronic gastritis, especially chronic atrophic gastritis. It is generally believed that intestinal epithelial hyperplasia of gastric mucosa and gastric cancer are related. Classification: Intestinal epithelial metaplasia can be divided into small intestinal metaplasia and colonic metaplasia. The epithelial differentiation of small intestinal type chemosis is better, and it is widely seen in various benign lesions, so small intestinal type chemosis belongs to inflammatory reaction. The epithelial differentiation of colonic chemosis is poorer, and the detection rate is lower in benign gastric diseases, but the detection rate is high in mucosal tissues adjacent to gastric cancer, indicating that colonic-type chemosis is related to gastric cancer. Treatment: Generally, first of all, we should use drugs to protect gastric mucosa; then drugs to eliminate gastric mucosal damage, such as controlling Helicobacter pylori infection, applying histamine H2 receptor impedant, controlling and improving bile reflux, anti-pepsin drugs, and protecting gastric mucosa. With chronic superficial gastritis, one should have a light, regular diet, regular rationing, and avoid stimulation by overly acidic, spicy, cold, and rough foods.