The invention relates to the field of garbage disposal, in particular to a garbage leachate guiding and draining system. A guiding and draining ditch is arranged on the slope bottom side of the bottomsurface of a garbage pit, leachate in the garbage pit flows to the slope bottom side of the garbage pit under the action of gravity, and a plurality of flow guiding pipes arranged parallelly are arranged on the side wall of the garbage pit. The garbage pit communicates with the guiding and draining ditch through the flow guiding pipes, the flow guiding pipes can prevent garbage and sludge from intruding and blocking through-flow of the leachate, the frequency of unlocking by maintenance personnel is reduced, an automatic water spraying device is arranged on the upper part or the side edge ofthe guiding and draining ditch. Nozzles of the water spraying device can spray high pressure water to flush the guiding and draining ditch. The problem of ditch blockage due to precipitation of garbage and sludge in the guiding and draining ditch can be effectively solved, and the frequency and workload of maintenance personnel going to the guiding and draining ditch to solve the blockage problemcan be reduced.