NOVELTY - A garbage is processed by coarsely dividing the garbage by selecting the garbage as combustible constituents, inorganic material, partial plastic paper, and putrefiable material; pre-processing and gasifying combustible components by extruding moisture of combustible constituent, baking the garbage, transmitting the dried combustible constituents to gasifier, performing gasifying reaction, generating combustible gas, purifying combustible gas, removing ash and tar in the gas, and storing in gas cabinet.    USE - Method for processing garbage (claimed).    ADVANTAGE - The method provides fast start-up of fermentation of city life garbage; and short period, easy bacterial cultivation and circulation. It reduces investment cost to 30-50% of incineration power generation. The garbage processing operation cost is one half of that of incineration.    DETAILED DESCRIPTION - Processing garbage comprises:    (A) coarsely dividing the garbage by selecting the garbage as combustible constituents, inorganic material, partial plastic paper, and putrefiable material;    (B) pre-processing and gasifying combustible components by extruding moisture of combustible constituent by an extruder, baking the garbage by a rotary kiln, transmitting the dried combustible constituents to gasifier, regarding the air as gasifying medium to process gasifying reaction, generating combustible gas, purifying combustible gas by a purifying system formed by a Venturi and greater than or equal to 2 levels of water scrubbers, removing ash and tar in the gas, and storing in gas cabinet;    (C) classifying the organic material, partial plastic paper, and putrefiable matter by directly recycling the resources comprising metal, bottle and pot selected from the inorganic material, regenerating object of the partial plastic paper, fermenting the putrefiable material, and composting and generating marsh gas and organic fertilizer; and    (D) generating electricity by combustible gas by leading thermal gas and marsh gas to gas engine to generate electricity through combustion.