As the important part of library information resources, the e-book has important preservation values. Currently, the e-book has characteristics in content formats, the copyright ownership and the digital right management, it hinders the process of the long-term preservation of e-books in libraries. Therefore, the long-term preservation of e-books in libraries should focus on following issues: the multiplex e-book format is difficult to unity,the nuclear copyright ownership is difficult to get the preservation right, the digital right management restricts the access to the
content acquisition.
