Gastritis usually includes Helicobacter pylori-associated gastritis, stress gastritis, and autoimmune gastritis. It can be relieved by drugs such as omeprazole, amoxicillin, lansoprazole, thioglycollate and so on. 1. Helicobacter pylori-associated gastritis: Helicobacter pylori-associated gastritis is usually caused by Helicobacter pylori infection, and usually patients can choose proton pump inhibitors combined with two kinds of antibiotics, such as omeprazole, amoxicillin and so on. 2. Stress gastritis: stress gastritis is usually caused by severe trauma, irritation and nerve inhibition and other external stimuli, caused by acute gastric mucosal damage inflammation. Generally, mild stress gastritis can be relieved on its own, if combined with gastric ulcer, patients need to take lansoprazole, aluminum thioglycollate and other drugs to inhibit gastric acid and protect the gastric mucosa. 3. Autoimmune gastritis: autoimmune gastritis is formed by autoimmune mechanism of chronic atrophic gastritis, patients can take anti-inflammatory drugs and drugs to protect the gastric mucosa to relieve the symptoms, such as omeprazole. It is recommended that patients should seek timely medical treatment when gastritis occurs, and should not blindly use medication to avoid adverse consequences.