A kitchen garbage processor, includes: a processor body, a dewatering component, and an oil-water separating component, the processor body has a working platform disposed thereon, an inlet for dumping kitchen garbage is disposed on the working platform, a fore end of the dewatering component is communicated with the inlet and configured to send a kitchen garbage that to be processed to the dewatering component to separate a solid garbage from a liquid garbage; a solid garbage outlet configured for sending out a processed solid garbage and a liquid garbage outlet configured for sending out a residual liquid garbage are disposed at a rear end of the dewatering component; a fore end of the oil-water separating component is communicated with the liquid garbage outlet so as to send liquid garbage that to be processed to the oil-water separating component to separate oil from water; an oil outlet configured for sending out separated oil and a water outlet configured for sending out separated water are disposed at a rear end of the oil-water separating component. Purpose of separating solid garbage, oil and water simultaneously is realized.