The difference between gastric ulcer and gastric erosion is mainly manifested as follows: Pathology: gastric ulcer is an inflammatory necrotic defect of the gastric mucosa that penetrates the mucosal base or reaches a deeper level; gastric erosion is a superficial necrotic defect confined to the gastric mucosa and its depth does not exceed the mucosal muscle layer. Clinical manifestations: gastric erosion is a gastroscopic diagnostic term, mostly seen in erosive gastritis. Acute erosive gastritis is an acute gastritis characterized by multiple erosions of the gastric mucosa and is an important cause of upper gastrointestinal bleeding. Chronic erosive gastritis generally presents with postprandial fullness, acidity, belching, irregular abdominal pain and indigestion. The typical symptoms of gastric ulcer are epigastric pain and are characterized by a chronic course, recurrent or periodic attacks, rhythmic epigastric pain, and abdominal pain that can be relieved by acid suppressants or antacids. Some cases only show indigestion symptoms such as epigastric distension, epigastric discomfort, anorexia, belching, and acid reflux. There are also a few patients who are asymptomatic. Treatment: The medications for gastric ulcer and celiac disease include acid inhibitors, H. pylori eradication, and gastric mucosal protectors, but the specific medications will vary according to the cause of the disease. In addition, gastric erosion usually does not require surgery, but for some severe gastric ulcers, surgery is also required. Prognosis: Gastric ulcers have a very high healing rate with effective medication, but because they penetrate the mucosal muscle layer, they inevitably leave a fibrous scar after healing. The majority of gastric mucosal erosions and bleeding can heal and heal on their own, and because they do not penetrate the mucosal muscle layer, they do not leave a scar after prognosis. A small number of gastric erosions may develop into ulcers. In general, gastric ulcer and erosion are different concepts and differ in terms of presentation, treatment, and prognosis.