The utility model discloses a secondary device of high integration intelligent transformer substation, including quick -witted case, intermediate bottom, axle installed part and mutual board installedpart, front end intermediate position department of machine incasement portion installs intermediate bottom, intermediate bottom installs the human -computer interaction board in the below, the human-computer interaction board passes through the pull spare junctor incasement surface of both ends installation, pull spare is formed by moving wheel locating part, wheel axis of rotation, removal wheel, axle installed part, mounting and mutual board installed part, machine incasement portion installs integrated control board in the rear end top, integrated control board gathers board, process layer data processing board, ordinary tap volume I/O board, central processing unit board and hookup mother set by GPS clock synchronization board, AC analog quantity and constitutes, hookup mother set upper end intermediate position department installs process layer data processing board. The utility model discloses can with the various unit synthesis that disperse to the device in, reduce the secondary equipment's in the engineering construction quantity, improve the reliability.