Organic waste coprocessing method and system

The invention relates to the field of solid waste disposal, in particular to an organic waste coprocessing method and system. The method comprises the steps of (a) separating out wet garbage and dry garbage from organic waste; (b) conducting aerobic fermentation treatment on the wet garbage under existence of microorganisms and conducting screening on a product obtained after aerobic fermentation treatment to obtain organic fertilizer and an oversize product; (c) conducting drying and pyrolyzing on the oversize product and dry garbage under the anaerobic or anoxic condition to obtain bio-carbon and pyrolysis gas; and (d) returning at least part of pyrolysis gas to be combusted to supply heat to the drying and pyrolyzing process and supplying waste heat generated from drying and pyrolyzing as heat to the aerobic fermentation treatment process. The system comprises a garbage separation device, an aerobic fermentation device, a screening device, a drying and pyrolyzing device and a heat getting device. The organ