NOVELTY - The system comprises a garbage sorting device with garbage sorting function, a garbage squeezing and de-watering device (4) with high pressure squeezing and de-watering function, a garbage incineration power generation device (6), a refuse-derived fuel production device, a semi-solid two-section marsh gas fermentation device, and a marsh gas generating device to generate electricity. The garbage incineration power generation device is adapted to burn the rubbish for power generation. The domestic garbage is collected mechanical sorting into the garbage squeezing and dewatering device.    USE - The system is useful for crushing classification and comprehensive treatment of domestic garbage, which is useful for preparing fertilizer.    ADVANTAGE - The system is capable of economically crushing classification and comprehensive treatment of domestic garbage with high practicability and degree of automation and without pollution.    DETAILED DESCRIPTION - The system comprises a garbage sorting device with garbage sorting function, a garbage squeezing and de-watering device (4) with high pressure squeezing and de-watering function, a garbage incineration power generation device (6), a refuse-derived fuel production device, a semi-solid two-section marsh gas fermentation device, and a marsh gas generating device to generate electricity. The garbage incineration power generation device is adapted to burn the rubbish for power generation. The domestic garbage is collected mechanical sorting into the garbage squeezing and dewatering device for high-pressure crushing under the action of pressure. The garbage is divided into two parts including dry component (5) and wet component. The dry components are directly used for incineration power generation or derived fuel manufacturing device by garbage is RDF. The wet component is used to marsh gas ferment by the semi-solid type biogas fermenting device to produce marsh gas used for power generation and the remaining of the recycled use.    DESCRIPTION OF DRAWING(S) - The figure shows a flow diagram of domestic waste crushing process.    Garbage storage bin (1)    Crushing device (2)    Sorting device (3)    Squeezing and de-watering device (4)    Dry components (5)    Garbage incineration power generation device. (6)