Front-back wiring display screen unit box and spliced display screen

The utility model discloses a front-back wiring display screen unit box and a spliced display screen, the front-back wiring display screen unit box comprises a box body frame and a cover plate, the box body frame is provided with a slot, the wall surface of the slot is provided with a wiring seat exposed out of the box body frame, one side of the cover plate is rotatably connected with the box body frame, and the other side of the cover plate is rotatably connected with the box body frame. The other side of the cover plate is connected with the box body frame through a locking structure, and the cover plate is used for closing the open groove to isolate the inner cavity of the box body frame from the outside. The front-back wiring display screen unit box not only can realize front wiring, but also can realize back wiring, so that the spliced display screen can be mounted and maintained from the front or the back as required, the mounting efficiency of the spliced display screen is improved, and the requiremen