One advantage of WSRF Web Service is to establish loosely connective system by itself. This kind of system is easier to be updated than strongly connective system, and its demand of the system is little in real implementation of Web Service. Loose connection is a favorite design pattern for a researcher in software design. GRB (Grid Resource Broker) system has to consider how the control flow flows from a service to another one and emphasize on designing the implementation of indexing service in GT5(Globus toolkits 5). GRB system centers on resource administration in computing grid environment and carries out the research surrounding numerous key technologies. The resource publication, querying resource, spending resource, file transfer service and system security problem of GRB system are analyzed and designed, and thus some exploration on the research related to grid computing and its grid application is done.