The invention relates to a protection device, in particular to a distributor wiring protection device. The invention discloses a distributor wiring protection device. A plurality of mutually isolated cooper bars are arranged on a distributor. The distributor wiring protection device comprises an insulation sleeve sleeved outside the copper bars, the insulation sleeve is longitudinally provided with a long strip notch, the long strip notch extends to one end of the insulation sleeve, and a notch opening and closing mechanism for opening and closing the long strip notch is arranged on the insulation sleeve. The distributor wiring protection device can cover the exposed copper bars and can prevent the electrified copper bars from being in direct contact with operators and construction tools to cause accidents. Thus, the operators can be effectively protected, meanwhile, the normal operation of load equipment of the electrified copper is also ensured. In addition, the construction schedule of cables and the copper bars can be also increased. Thus, the distributor wiring protection device not only protects construction safety but also increases production efficiency.