To fully leverage the information from different data sources and applications, an enterprise needs a generic, interoperable and flexible infrastructure to integrate and coordinate information across back-end data sources on semantic level. Through undertaking research at the intersection of the Semantic Web and Grid, the Semantic Grid expects to establish a semantic interconnection environment to effectively organize, share, cluster, fuse, and manage globally distributed versatile resources. In this context, we introduce SGII, an EII (Enterprise Information Integration) infrastructure based on Semantic Grid vision to achieve adaptive and intelligence information sharing. A survey of existent solutions is made to provide evidence of the benefits from Semantic Grid in the context of integration and interoperation of enterprise information. A primary architecture for SGII is introduced based on the analysis of realizing the vision of an infrastructure for semantic information integration...