The invention discloses a spraying self-cleaning system of kitchen waste separation equipment. The kitchen waste separation equipment adopting the spraying self-cleaning system comprises a feeding system. The feeding system comprises a packing auger, a U-shaped gate groove for containing the packing auger, a shell for containing the U-shaped gate groove, and a feeding pot opening formed in the topof the shell. The spraying self-cleaning system comprises a spraying pipeline, and a plurality of nozzles arranged on the spraying pipeline. The spraying pipeline is arranged in the feeding pot opening and surrounds the feeding pot opening, and the nozzles penetrate the side wall of the feeding pot opening to spray liquid into the U-shaped gate groove. The nozzles are inclined thin slits and havea certain jet angle and certain slit width. Inclined plates are arranged around the feeding pot opening, the high ends of the inclined plates are connected with the shell, and the other low ends of the inclined plates are connected with the top of the side wall of the U-shaped gate groove. The positions, allowing the nozzles to spray water, on the side wall of the feeding pot opening are locatedat the top of the high ends of the inclined plates, and the jet angle of the nozzles in the shape of the inclined thin slits is parallel to the inclined plates.