The invention provides an overturn-to-lock type portable watt-hour meter installing/wiring training device and relates to the field of power equipment. The overturn-to-lock type portable watt-hour meter installing/wiring training device comprises a bottom plate assembly. A compression folding mechanism is arranged on the bottom plate assembly. The compression folding mechanism is provided with a middle plate assembly. The middle plate assembly is provided with a rectangular frame enclosed by a plurality of display boards. Bolts for simulating wiring terminals and a plurality of watt-hour meters are hung onto the display boards. According to the technical scheme of the invention, the device adopts a display board type overturning structure, so that the field wiring situation can be simulated more truly. Meanwhile, after being turned over, the back part of a turnover board can also be utilized. At the same time, a threaded hole is designed as a through hole and an elastic layer is arranged in the through hole. Based on the above design, only the insertion operation is required, so that the operation is simpler and more convenient. The plate surface of the device does not need to change. Meanwhile, the device is convenient to disassemble and assemble, and convenient to carry about.