NOVELTY - Producing organic granulated fertilizer or feed by biogas slurry comprises e.g. taking the middle layer biogas slurry from a methane fermentation tank, filtering by a sand layer and a fiber layer to obtain a clear liquid, taking sodium humate as raw material, adding clear liquid, stirring and mixing in a mixing tank, pumping the mixed slurry into an extraction tank with a jacket through a slurry pump, introducing stream into jacket and heating, stirring, promoting the organic reactions of sodium humate and liquid to form complexes, and conveying the complex into an evaporator by using pump.    USE - The method is useful for producing an organic granulated fertilizer or feed.    ADVANTAGE - The method is simple, utilizes simple devices, saves time and labor, cleans the environment, and is beneficial to the virtuous cycle of the biological organic agriculture.    DETAILED DESCRIPTION - Producing organic granulated fertilizer or feed by biogas slurry comprises (i) taking the middle layer biogas slurry from a methane fermentation tank, filtering by a sand layer and a fiber layer to obtain a clear liquid, then taking sodium humate with a purity of 50% as raw material, adding clear liquid, stirring and mixing in a mixing tank, where the liquid-solid ratio is 9:1, and obtaining a mixed slurry; (ii) pumping the mixed slurry into an extraction tank with a jacket through a slurry pump, introducing stream into the jacket and heating, stirring, promoting the organic reactions of sodium humate and liquid to form complexes, conveying the complex into an evaporator by using the pump, evaporating and concentrating until the slurry specific gravity is 10B degrees , conveying the slurry into an spray drying tower, and drying using an hot wind to obtain an intermediate powder state; (iii) adding (in wt.%) the residues of a decoction of Chinese herbal medicine (20), sodium humate (10), industrial waste residue (25) and inorganic nitrogen-phosphorus-potassium fertilizer (25) into the intermediate powder (20), uniformly mixing the materials, conveying the mixture into a disk pelletizer, palletizing by adding water to obtain an organic granulated fertilizer; and (iv) adding (in wt.%) corn flour (20), bran powder (20), pine needle powder (15), sodium humate (5) and supernatant of biogas slurry (10) into the intermediate powder (30), uniformly mixing, conveying into an extruding type pelletizer, extruding and palletizing to obtain an organic feed.