Helicobacter Pylori(H. Pylori) Diagnostic Kit is an in vitro immunochromatographic assay for the qualitative detection of H.Pylori antibodies to H.Pylori antigen in human serum . It is related with cytotoxin released from HP which causes clinic disease. VacA, CagA and UreC are the most important component of HP antigen, which can stimulate humanbody strong immunoreaction and cause stomach epithelia damage,putrscence and ulcer,etc. According to research, HP infection is related with chronic gastritis, digestibility ulcer stomach adenocarcinoma and stomach lymphoma. It is important for clinical diagnosis of HP infection.