Gastric bulge may be gastric polyp, or it may be caused by gastric tumor or pyloric obstruction. 1. Gastric polyp: it is manifested as the lesion of gastric mucous membrane epithelium, protruding into the gastric cavity, which may be related to Helicobacter pylori infection, etc. Due to the long-term stimulation of gastric mucous membrane, the gastric epithelium is over-regenerated, which is manifested as the bulging of gastric mucous membrane. 2. Gastric tumor: if suffering from gastric cancer and other diseases, gastric mucosal bulge may appear during gastroscopy, accompanied by epigastric discomfort, pain and other clinical symptoms. 3. Pyloric obstruction: if consuming rough food for a long time, the mucous membrane may be damaged repeatedly, and ulcers may appear to induce pyloric obstruction, which is manifested as obstruction of gastric emptying, and the stomach will be bulging if there is excessive gastric content. If gastric bulging occurs, it is recommended to closely observe the situation, and if abnormalities occur, consult a doctor in a timely manner and follow the doctor’s instructions for symptomatic intervention.