The invention discloses a flat copper wire bending forming device. The flat copper wire bending forming device comprises a compression die and a driving unit, wherein the compression die comprises twopairs of pressing heads consisting of a first upper half pressing head, a first lower half pressing head, a second upper half pressing head and a second lower half pressing head; the two upper half pressing heads are combined to form an upper forming surface, and the two lower half pressing heads are combined to form a lower forming surface; the driving unit comprises a first actuator, a second actuator, a third actuator, a fourth actuator and a fifth actuator, wherein the first actuator, the second actuator, the third actuator and the fourth actuator are used for respectively controlling theup and down movement of each pressing head, and the fifth actuator is used for adjusting the horizontal transverse distance between the two pairs of pressing heads; and the moving amount of each actuator is set according to the forming condition of the shape of bent part transition section of a space-type hairpin-shaped flat copper wire, so that a flat hairpin-shaped flat copper wire in the compression die is pressed into the space-type hairpin-shaped flat copper wire with the bent part transition section. According to the flat copper wire bending forming device, the mechanical production ofthe space-type hairpin-shaped flat copper wire can be achieved, the manual involvement is reduced, and the product quality and the production efficiency are improved.