Service innovation is an important pathway to create value and gain competition advantage for hospitality service in hotel industry, and there are few related researches on hotel service innovation at home. This paper reviews the related researches on foreign hotel industry service innovation from such aspects as what service innovation of hotel industry is, what the innovation is affected, how to implement the innovation, what kind of role the innovation plays and so on and from the perspective of corresponding composition dimensions, influential factors, behavioral process, performance measurement and so on, furthermore, generalizes the integration analysis framework for hotel service innovation researches and points out future research direction.