in view of the needs of SGCC for state grid intelligent electric meter automated detection, in this paper, a completely new 3-phase electric energy meter detecting device is introduced. The device adopts modular design, the unit board is controlled by ARM system and welded with pressure by Stepper motor, and every meter bit has various new functions, such as automatic guide, electric pressure welding function, as well as meter holder temperature detection, current open circuit automatic short circuit, fees charged trip test, etc. Thus, the device has good application value for electric energy meter manufacturers and measurement centers of various provinces.