The invention discloses a digital library resource unified search system. The system comprises a unified search module and a federated search module, the unified search module is provided with a self-established resource integration platform SDIP, the federated search module is provided with a resource integration platform, the self-established resource integration platform SDIP is used for conducting format translating on self-established resource, establishing a KBase database, establishing similarity indexing, establishing classification and grouping and issuing and maintaining the database, and the resource integration platform is used for integrating outsourcing resources through an open agreement connector and a database access connector and conducting virtual indexing on the outsourcing resources. By means of the digital library resource unified search system, integrating and searching CNKI resources, unit self-established resources, unit outsourcing resources and internet resources can be achieved simultaneously, and one-stop searching, finding and positioning of all resource are achieved. The management platform can be combined with a CNKI digital library, a digital cleaning research platform and the like, and various kinds of personalized services are provided.