NOVELTY - Method for large-scale resource utilization, separation and filtration of cow dung, involves (a) storing the cow dung in a room, transporting the cow dung to stirring tank, diluting the cow dung using water, mixing diluted cow dung with cow urine, and performing dehydration and filtration, (b) adding obtained solid dry cow dung to sinking pool, filtration pool and liquid storage pool, and performing solid-liquid separation, and (c) adding obtained product to straw, inoculating e.g. fermentation strain, performing fermentation, and processing product.    USE - The method is useful for large-scale resource utilization, separation and filtration of cow dung (claimed) for producing organic fertilizer.    ADVANTAGE - The method is environmentally-friendly to perform, and reuses resources of intermediate substances and final substances.    DETAILED DESCRIPTION - Method for large-scale resource utilization, separation and filtration of cow dung, involves (a) storing the cow dung in a room, transporting the cow dung to stirring tank using truck, diluting the cow dung using water, uniformly mixing diluted cow dung with cow urine, stirring obtained mixture, performing dehydration and filtration, separating liquid, and controlling moisture content of solid dry cow dung at 55-65 wt.%, (b) adding solid dry cow dung obtained in step (a) to sinking pool, filtration pool and liquid storage pool, and performing solid-liquid separation, where filtration pool is connected with liquid storage pool, and (c) adding product obtained in step (b) to straw, controlling moisture content of the straw at 45-65 wt.%, inoculating fermentation strain or enzymes, performing fermentation at 15-20 degrees C for 24 hours, turning mixture when temperature reaches 60-65 degrees C, controlling fermentation temperature at 60-65 degrees C. cooling fermented product to room temperature, and processing fermented product to obtain organic fertilizer, where 3-5 kg enzyme or fermentation strain is inoculated per m3 of rice straw.