The long-term preservation of digital archival resources has always been the central work of the archival department. With the development of information technology, the digital archival resources are experiencing a massive growth. So, it is of vital importance to choose a suitable storage medium to guarantee the authenticity, integrity, usability and security of electronic records. This paper is aimed to conduct in-depth analysis of the technology status and storage advantages of Blu-ray disc, so as to put forward effective methods and choices to solve the problem on how to preserve digital archival resources for a long period, thus promoting the long-term preservation and effective application of digital archival resources.