The invention provides a garbage recovering-sorting-packaging system with an automatic finished-product transportation function and a working process thereof. The garbage recovering-sorting-packagingsystem comprises a garbage transportation cart, a garbage temporary-storage bin, a crushing device, a conveying device, a belt type inclined-net transporting and sorting device, a secondary air-separation device, an electric sorting device, a secondary magnetic-separation device, a non-ferrous metal color temporary storage bin, a compressing and packaging device, an automatic transportation vehicle and a disinfection device, wherein a pre-magnetic-separation device is arranged on the garbage transportation cart; an electromagnetic suctioning disc of the pre-magnetic-separation device is fixedat the bottom part of a conveying steel belt and can rotate along with the steel belt; a pushing plate and a cleaning and disinfecting device are arranged on the garbage transportation cart; the conveying device is connected with the sorting device and the compressing and packaging device in series; the automatic transportation cart is used for transporting the compressed-packaged-formed metal blocks to a loading area. According to the garbage recovering-sorting-packaging system and the working process provided by the invention, the design is ingenious, the sorting function is complete, metalblocks after compressing and packaging treatment can be automatically transported to a loading area for loading, so that the garbage recovering-sorting-packaging system is very suitable for being promoted and used.