幽门螺杆菌（Hp）感染是儿童慢性活动性胃炎和消化性溃疡的主要原因。有证据显示Hp感染在一些胃肠外疾病中也起一定作用，特别是Hp感染与儿童缺铁性贫血、特发性血小板减少性紫癜、生长发育障碍等有较为密切的关系。本文就近期Hp感染与胃肠外疾病的研究进展作一综述。

Helicobacter pylori (Hp) infection is the main reason for the chronic active gastritis and peptic ulcer in children. Increased evidences show that Hp plays an important role in a variety of extraintestinal diseases in children as well. There is a close relationship between Hp infection and iron deficiency anemia, idiopathic thrombocytopenic purpura and growth retardation. In this article, the correlation between Hp infection and several extraintestinal diseases is reviewed.