The invention relates to a plastic cleaning device. The plastic cleaning device comprises an annular cleaning water tank, a shifting device and a discharging device, wherein a columnar overflow grooveis formed in the middle of the cleaning water tank; the shifting device is used for shifting and colliding with broken and crashed materials on water surface; and the discharging device is used for sorting and discharging light plastic. According to the plastic cleaning device, the broken and crashed materials of waste storage batteries can be pre-cleaned and sorted before crushing and cleaning,and the cleaned light plastic is separated to enter a subsequent crushing and cleaning link, so that the cleaning efficiency and the plastic cleanliness are greatly improved, and effective protectioncan be provided for subsequent crushing and cleaning equipment.