The invention discloses double-layer plate sorting equipment and a use method thereof. The double-layer plate sorting equipment comprises a circuit controller, and a charging device, a bar code reading device, a wrong plate output device, a double-layer sorting device, a transfer device and an output device that are controlled by the circuit controller. Compared with the prior art, every single plate on which a bar code is pasted is conveyed to the bar code reading device by the charging device, the bar code reading device can pick out the plates not belonging to the batch, and the plates not belonging to the batch are output by the wrong plate output device; in the double-layer sorting device, the plates can be conveyed at the lower layer, and be sorted and stacked at the upper layer, finally the plates stacked at the upper layer are output through the output device, and the stacking speed and the transfer speed of the plates are high, so that the stacking efficiency and the transfer efficiency of the plates are improved substantially, the plate cutting overall efficiency is improved substantially, the automaticity is improved, the labor intensity is lowered, the work force is reduced, and the cost is lowered.