The invention relates to a coke oven gas desulfurization waste liquid recycling method. According to the technical scheme, a decolorising agent is added into filtered coke oven gas desulfurization waste liquid for discoloring to obtain faint yellow clarified waste liquid; the faint yellow clarified waste liquid is subjected to vacuum evaporation, concentrated liquid obtained after evaporation is centrifugally separated, and a salt mixture and filtrate I are obtained; an organic solventing-out agent and an extraction agent are used for refining the salt mixture, and potassium thiosulfate and potassium rhodanide are obtained; iron vitriol is added into the filtrate I, stirring is carried out, precipitate is obtained, acid pickling and centrifugation are carried out, and a ferric ferrocyanide product is obtained. The coke oven gas desulfurization waste liquid recycling method has the advantages of being easy to operate and low in cost; coke oven gas desulfurization waste liquid can meet the water quality requirements for biochemical treatment, the recycling rate of thiosulfuric acid radical and thiocyanate radical in the coke oven gas desulfurization waste liquid is high, and the product purity is high.