With the development of the electricity system reform，shutting down power plants，hydropower stations have emerged，and the demand of electric fence becomes increasingly high. 500-kilovolt transformer substation is an important hub for sending power from Sichuan to the East，and is also the major project for the country and Sichuan Province. The archival materials formed by this project are so numerous and new that our bureau carries forward the spirit of striving to surpass, pursuing excellence and the spirit of dedication. Our bureau also pays close attention to file-oriented infrastructure and major projects file management so as to effectively guarantee the completeness，norm and timeliness of archiving files.