A carbon 14 breath test for HP infection is the presence of HP infection in the patient’s gastric cavity. The full Chinese name for HP is Helicobacter pylori, a bacterium that commonly causes gastritis, peptic ulcers, and gastric cancer. When a patient’s carbon 14 breath test indicates H. pylori infection, H. pylori eradication treatment should be given under the guidance of a specialist as appropriate. In the case of peptic ulcer patients, or patients with a family history of gastric cancer, regular cooperation with the physician is needed to eradicate H. pylori. If a routine physical examination with a carbon 14 breath test indicates the presence of HP infection, but there are no other risk factors, and gastroscopy does not reveal any specific lesions in the gastric mucosa, the patient can be temporarily observed, and a specialist should be consulted for details.