The invention discloses a bending die with split female dies. The bending die with the split female dies can be used for forming V-shaped pieces of different shapes and different bending degrees. The bending die comprises a male die capable of moving up and down; a protruding V-shaped face is arranged at the lower end of the male die; the female dies are arranged under the male die and comprise the first female die and the second female die which are oppositely arranged; the first female die is fixedly arranged; the first female die and the second female die are provided with a first threaded hole and a second threaded hole respectively; the first female die and the second female die are opposite in position, and the rotating direction of the first female die and the rotating direction of the second female die are opposite; a screw rod is connected to the interior of the first threaded hole and the interior of the second threaded hole through threads; a first bevel is arranged on the upper portion of the first female die; a second bevel is arranged on the upper portion of the second female die; and a V-shaped groove is formed between the first bevel and the second bevel.