With the rapid development of computers, databases, storage and network technology, the carrier of information dissemination has undergone tremendous change and the trend of information technology has permeated all levels of society. People are enveloped in a huge information network and a large number of invalid information and spam, so it is a disaster for users to find the right resources. As a distribution center of library information resources, it provides users with a targeted and personalized information services through intelligent information infrastructure information service system. This paper focuses on the characteristics of digital data library and it proposes construction of intelligent information solutions of digital library.