Under the electronic single track system, the key of the new digital archives construction is to equip the electronic archives keeper and establish the electronic archives repository. Based on the analysis of the potential risks and security problems faced by the long-term preservation of electronic archives, combined with the requirements of the long-term preservation, process management control and ecological environment construction of electronic archives under the single track system, this paper studies and puts forward the technical platform for the construction of electronic archives repository and the storage model for the sub database management of electronic archives from the three dimensions of trusted storage, safe access and standardized use of electronic archives. It is aimed to provide ideas and methods for the credible management of electronic archives.