Horizontal wiring cabinet

The invention provides a horizontal wiring cabinet which comprises a vertically arranged wiring cabinet bottom plate and two horizontally arranged girders for placing testing wire harnesses. A wire harness fixing plate and a power supply box module fixing plate are arranged between the two girders, plug fixing plates are arranged at the tops of the girders, and supporting beams are arranged at the positions close to the plug fixing plates, and a terminal strip is arranged on the wiring cabinet bottom plate. The horizontal wiring cabinet is of a horizontal structure, enables height of the wiring cabinet to be converted into width, leads wiring operation to be changed from a vertical type into a horizontal type, greatly reduces operation height, eliminates operation potential safety hazards, improves wiring efficiency of operating staff and detection coverage rate, finds wiring potential quality hazards in advance, and guarantees that products meet related requirements for process, quality and the like.