An effective assemble-oriented framework for grid Web service based on open grid service architecture was proposed, in which Web service semantics network constructed by software reuse was designed to enhance the locating of assemble-oriented service resources. The successful Web services assembled structure was exploited to design semantics network, the logical and the physical structure of the resource was separated in Web service, and the logical resource derived from type ID of Web service was combined. Experiment results show that the success ratio of Web service request comes to 100% while providing completely assembly semantics set. This model provides guarantee of the reliability of assemble Web service and establishes the foundation of web service automatic interaction, customizing application service and dynamic service configuration.