Disclosed herein is a dish washing machine. The dish washing machine includes a washing tub in which dishes are stored, a nozzle provided at one side of the washing tub to spray washing water, a vane configured to move in the washing tub and deflect the washing water sprayed from the nozzle toward the dishes, a vane holder movably combined with a rail configured to guide a movement of the vane and configured to support the vane, a driving source configured to generate power for driving the vane to reciprocate, a belt driven to transfer the power generated by the driving source to the vane, and a direction changing member with one end configured to rotate with respect to the vane holder and another end configured to rotatably move with the belt when a movement direction of the vane is changed.
