Large pieces of garbage are collected and transported to the large piece of garbage crushing and processing center. The chain conveyor transports the large pieces of garbage to the coarse crusher, crushing them into smaller sized materials. The iron remover sorts out metals such as iron wire and iron sheets, while other materials are transported to the fine crusher for further crushing through the belt conveyor. After crushing, the discharged material is further separated from the iron component through the magnetic separator, and other crushed materials are transported to the air separator through the belt conveyor. The air separator further screens the materials according to their weight, while light substances such as sponge leather are transported to the packaging machine. The entire line system is sealed for dust removal