Throughout the history of mankind,infections have been the major cause of diseases.Over the last decades,not only the incidence of emerging infectious diseases have increased,but also tremendous strides have been made in understanding the biology of several pathogenic microorganisms.Helicobacter pylori(H.pylori)is a spiral-shaped,gram-negative bacterium,which infects over the half of the world’s population.H.pylori has been implicated in the pathogenesis of a number of gastrointestinal disorders.However,new researches have demonstrated that H.pylori is also involved in the pathogenesis of various extragastric diseases.The difference in the clinical outcome of H.pylori infection may be explained,at least in part,by host response to the infection and H.pylori virulence factors.It is obvious that as developments in the research on H.pylori spring up,an understanding of the pathophysiology of H.pylori infection will continue to be identified.Here in this review,we summarize the current knowledge about H.pylori and its association with inflammatory skin diseases.