Nowadays, with the rapid development of the archival digitalization in the archives nation wide, the outsourcing project has been one of the major forms of archival digitalization. Meanwhile, it has also become a part where security problems could most possibly occur in the archival information construction. By analyzing the risks on the security of outsourcing project of archival digitalization, this paper studies the security management strategies and puts forward the guidelines of security management work on archival digitalization.