Helicobacter pylori is a curved rod-shaped gram-negative bacillus commonly found in the gastric antrum and on the surface of the gastric mucosa. H. pylori is a gram-negative bacillus that is located on the surface of the gastric antrum and the gastric mucosa, but it does not invade the intrinsic glands of the mucosa, and it can secrete cytotoxic proteins, urease, and vacuolar toxins, which can lead to gastritis, gastric ulcers, gastric cancer, and other diseases. Helicobacter pylori infection can manifest as bloating, nausea and vomiting, loss of appetite, etc. It is recommended to seek early medical attention and standardize the use of quadruple medication, i.e., the combination of 2 antibiotics such as amoxicillin and clarithromycin + bismuth + proton pump inhibitor such as omeprazole. Drugs need to be used under medical supervision.