The utility model provides an electronic transformer metering performance detection device, including input interface subassembly, central processing unit and the output interface subassembly that connects gradually, the input interface subassembly including the synchronization that is connected to central processing unit respectively to the time interface ware, digital quantity interface ware, analog quantity interface ware and MMI configuration interface ware, central processing unit is last to be connected with clock, battery, data memory and record respectively and to affect the electric flux arithmetic unit, the output interface subassembly is including connecting electric energy pulse interface ware and the clock pulse interface ware on central processing unit respectively. The utility model provides a device, effective degree of accuracy that has just improved integrated level and measurement reliably to can make a concrete analysis of electronic type current transformer and the size of electronic voltage transformer to the influence of measurement, effectively improve the measurement accuracy of electronic transformer at intelligent substation, and then improved the operational reliability who installs electronic transformer's intelligent substation.