With the rapid development of information technology, information resources and achieving access based on digital development are increasing accordingly. And libraries which carry a large amount of information own enormous information resources. China and down to the whole world had built innumerable libraries; in order to eventually achieve information resource sharing and union search platform, the information resources of library need to be integrated. Efficient integration of library information resources not only can eliminate heterogeneous among different documents, but also can achieve sequential and systematic information resources on the basis of different needs of users, shortening the search time to quickly acquire new knowledge and meeting readersÂÂ diverse and individual needs eventually. The research mainly applies field surveys, comparative analysis, systems analysis, literature and other research methods, combing with information science, computer network science and other methods, focusing on the elaboration of library information resourcesÂÂ integration concept, principles, process, structure and pattern within the digital trend, and makes certain comparison about the typical resource integration system in China and abroad. The research aims to assist the users to acquire information efficiently, so that the relatively independent and closed information resources can win more readers of all ages by integration of library information resources.