NOVELTY - Extracting sodium thiocyante from coking desulfurization waste liquid to obtain organic fertilizer involves coking desulfurization waste liquid under 60 degrees C and 500 revolution per minutes (rpm) and added activated charcoal to the solution with stirring, heat decolorization for 30 minutes stirring; filtering to collect solid substance and filtrate, evaporating the filtrate to dryness to obtain solution containing ammonium thiocyanate, ammonium thiosulfate and ammonium sulfate; ethanol extraction, pressure filtration, crystallization and centrifugation to obtain fertilizer.    USE - For extracting sodium thiocyanate from coking desulfurization waste liquid to obtain organic fertilizer (claimed).    ADVANTAGE - The method is environment-friendly without pollution, and recycles all the materials, thus reduces the production cost to obtain organic fertilizer.    DETAILED DESCRIPTION - Extracting sodium thiocyante from coking desulfurization waste liquid to obtain organic fertilizer involves: coking desulfurization waste liquid under 60 degrees C and 500 revolution per minutes (rpm) and added activated charcoal to the solution with stirring, heat decolorization for 30 minutes stirring; filtering to collect solid substance and filtrate, evaporating the filtrate to dryness to obtain solution containing ammonium thiocyanate, ammonium thiosulfate and ammonium sulfate; crushing the mixed salts into crushing machine to obtain a particle size of less than 1cm fragment, adding ethanol into the reaction tank at 100 rpm stirring speed for 1 hour to obtain a liquid A, where the desulfurization waste coke, activated carbon and ethanol weight ratio is 1000:3:500; introducing nitrogen gas in the obtained liquid A filter tank under pressure at 0.6 Mpa, collecting filter residue and filtrate and evaporating the filtrate in evaporation tank at 100 degrees C under stirring and evaporated speed of 200 rpm for 20 minutes to obtain liquid B; taking the liquid B in crystallization tank, cooling to obtain crystal liquid with stirring, speed of 100 rpm, at temperature dropped to 25 degrees C, centrifuging the resulting crystalline liquid at speed of 1000 rpm to obtain crystals of ammonium thiocyanate body and the mother liquor; subjecting the residue to hypothermia drying, adding to the mixer brown coal powder and mixing monoammonium phosphate, potassium chloride and organic material liquid evenly, adding to Twin-screw extruder granulator, for granulation, and finally cooling, with dry control moisture content amount of 2%, packaging to obtain organic fertilizer, where the filter residue, coal powder, monoammonium phosphate, potassium chloride and organic material liquid weight ratio of 1:2:3:2:5.