Summary: Our university library decide to build up a local electronic resources preservation and management platform, which can both provide the preservation of subscribed electronic resources, and provide the access to those resources. In this paper, we introduce some of our research and practice for the task, including the framework design, AIP and metadata framework design and practice. In addition to deciding on the more traditional descriptive and administrative metadata, particular care needs to be given to the choice of structural and preservation metadata, as well as to integrating the various metadata components. We have selected METS structural, PREMIS preservation and QDC descriptive metadata for the Tsinghua university library’s digital preservation system and used METS as the container format for integrating the various metadata components, and developed a metadata framework to aid in the preservation of digital resources.