Gastric ulcer is more serious than superficial gastritis and erosive gastritis. If the diagnosis is superficial gastritis or erosive gastritis, the damage is only on the surface of gastric mucosa. Once gastric ulcer occurs, the damage of gastric mucosa has reached submucosa and even muscularis propria. From the pathological changes, gastric ulcer is a serious stomach disease. In the treatment of these diseases, there is a certain degree of * * *, so we can adopt quadruple therapy, generally using proton pump inhibitors to inhibit the secretion of gastric acid, and adding gastrointestinal mucosal protective agents to promote the self-healing of gastrointestinal mucosa. In addition, you can do a gastroscope to see the situation of Helicobacter pylori. Patients with chronic gastritis and gastric ulcer complicated with Helicobacter pylori infection are advised to use sensitive antibiotics for active antibacterial treatment.