Cross-domain heterogeneous resources management mechanism and system implement oriented information grid is introduced in this paper. it has researched on the design of extensible heterogenous resources description model, configurable register publish model and general query description model, and provided the general architectural model of the information grid resource management for every business field. on that basis, a proto-type system of hierarchical cross-domain information grid resource system is introduced. it provides the supporting technology for the effective sharing and comprehensive utilization of the grid resource.