HP, Helicobacter pylori, is a bacterium that lives in the pylorus of the gastric sinus and damages the gastric mucosa, and is closely related to the development of gastritis, erosion, peptic ulcers and even gastric cancer. The detection of this bacterial infection can help guide the treatment of these diseases. If the test reveals this bacterial infection along with the above-mentioned diseases, H. pylori needs to be eradicated first, followed by treatment of gastritis, erosion, and peptic ulcer. If you do not have this bacterial infection, you can treat gastritis, erosion, and peptic ulcer directly. All three of these diseases are directly related to excessive secretion of gastric acid and require the use of drugs to suppress gastric acid and protect the gastric mucosa after diagnosis. H. pylori infection is more closely related to gastric cancer and is a high risk factor for gastric cancer. Patients are often prompted to review gastroscopy regularly to rule out gastric cancer.