The invention belongs to the field of ventilating systems of nuclear power plants and provides a reusing production system for filters of a nuclear power plant. The reusing production system comprisesa machine case, a disassembling device, a decoring device, a planing device and a ventilating device, wherein the disassembling device is arranged inside the machine case and is used for disassembling sheets of box bodies of the filters, the decoring device is arranged inside the machine case and is used for scraping off filter cores from interior of the filters, the planing device is arranged inside the machine case and is used for planing disassembled sheets of the filters, and the ventilating device communicates with the interior of the machine case and is used for providing negative pressure for the interior of the machine case. According to the reusing production system, through arranging the disassembling device, the decoring device and the planing device, the difficulty of reusingproduction of the filters can be lowered, and the production efficiency is increased; and the disassembling device, the decoring device and the planing device are separately arranged inside the machine case, and the ventilating device is used for providing negative pressure for the interior of the machine case, so that dust generated during the reusing production of the filters can be removed timely, and pollution to workshop environments and injury to health of workers are avoided.