To provide a garbage disposal system capable of suppressing the loss of energy originated from organic matters provided to garbage as much as possible and taking out the garbage with an extremely high effective utilization degree even while reducing the volume of the garbage.

The garbage disposal system comprises: kitchen drain pipes 1A, 1B and 1F installed inside a building; crushers 2A and 2B installed at a plurality of parts for crushing the garbage; water suppliers 3A and 3B for supplying water to the crushers; solid-liquid separators 4A and 4B for solid-liquid separating the mixed drainage of the crushed garbage and the water into crushed solid matters and separate liquid; and separate liquid transfer pipes 5A and 5B for transferring the separate liquid from the solid-liquid separators 4A and 4B to the kitchen drain pipes 1A and 1B.