The invention discloses a tray brush metallic brush wire bending device. The device comprises a base, a support plate and a half-pace are arranged on the base, an upper bending gear and a lower bending gear are arranged in the support plate, an upper bending arm and a lower bending arm which are symmetrically arranged are fixedly connected to the outer side faces of the upper bending gear and the lower bending gear respectively, a horizontal transverse through hole is formed inside the half-pace, a push air cylinder is arranged at the outer end of the horizontal transverse through hole, the inside of the half-pace is further provided with a horizontal longitudinal through hole, a blanking air cylinder is arranged at the outer end of the horizontal longitudinal through hole, a loading channel is formed in the lower portion of the horizontal transverse through hole, a loading air cylinder is arranged at the right end of the loading channel, a feeding through hole is formed in the lower portion of the left end of the loading channel, and a feeding air cylinder is arranged at the bottom of the feeding through hole. In the tray brush metallic brush wire bending device, a metallic brush wire is automatically bent by adopting the bending device, time is shortened, force is saved, the work efficiency is high, the symmetry of the bent metallic brush wire is good, the bent metallic brush wire is fixed through a rubber ring, which facilitates storage and transfer, and the device is reasonable in structure design and easy to operates and use.