The H. pylori antibody test is a qualitative test that is usually negative under normal conditions, and when it is reported as positive, it indicates the presence of an H. pylori infection. The H. pylori antibody test is usually a qualitative test and the results are usually expressed as negative or positive. The normal value for H. pylori antibodies is negative, and a positive test report indicates the presence of H. pylori infection. However, since H. pylori antibodies are not produced until some time after infection with H. pylori and remain in the body for a long time after eradication treatment, the H. pylori antibody test cannot be used as a basis for evaluating the efficacy of treatment or distinguishing between recent and previous infections, and is usually used for investigation. H. pylori is a bacterium that colonizes the human stomach, and its infection is closely related to the development of chronic gastritis, peptic ulcer, gastric cancer and other diseases. Therefore, H. pylori testing has an important role in the diagnosis of diseases of the digestive system. Currently, the main methods for detecting H. pylori include H. pylori antibody and urea breath test. At present, the carbon 13 or carbon 14 urea breath test is usually preferred for the detection of H. pylori. If the test finds that H. pylori is positive, it is recommended to consult a doctor in time and accept treatment actively to avoid delaying the condition.