Abstract: The library must take the initiative to adapt the development of Internet and mobile data, and introduce the personalized service mode of search engine and cloud computing technology in the Web 2.0 environment to library's information resource construction and personalized information service. To establish the personalized service mode of search engine and the personalized library service system of cloud platform, can meet the information needs of users and get rich literature content, improving the quality and broadening the way of library's personalized service.

Key words: Search engine