Archival papers, as the only way to preserve the whole conservation project information, play a very important role in conservation projects and have become an essential part of the protection of cultural relics with the conservation of geotechnical heritage sites being valued and strengthened by the nation. This paper analyses the importance of project archival information on the consolidation of geotechnical class heritage sites, presents how to initiate project archival papers and the contents and methods information that should be collected. It also identifies the body of forming and preserving deposited document and the type of carding and condensing project files. On this basis, archival papers are divided into the three sections:pre-project preparatory files, construction technical files and completion files. The connections and differences between them have been analyzed. At the same time, this paper analyzes and makes conclusions regarding specific operational procedure and content and requirement on the initiation and collection of project archival information, classifying and arranging, and sorting and generating paper.