NOVELTY - Synthesizing ferrous lithium phosphate slurry, comprises: (i) adding sodium carboxymethyl cellulose to water, and fully stirring fluid to uniform colloidal solution; (ii) adding conductive agent and uniformly stirring it; (iii) adding the ferrous lithium phosphate and uniformly stirring it; (iv) adding N-methylpyrrolidone and uniformly stirring it; and (v) adding butadiene styrene rubber and uniformly stirring it. The sodium carboxymethyl cellulose is taken as a dispersing agent in step (i).    USE - The ferrous lithium phosphate slurry is useful in ferrous lithium phosphate battery.    ADVANTAGE - The sodium carboxymethyl cellulose taken as a dispersing agent and a thickening agent and the butadiene styrene rubber taken as a binder are both materials generally used in the chemical industry, thus the obtained ferrous lithium phosphate slurry synthesized by the method has good fluidness, stable solid content and viscosity coefficient. The method is simple and requires less cost, thus can be applied to large scale industry production.    DETAILED DESCRIPTION - Synthesizing ferrous lithium phosphate slurry, comprises: (i) adding 0.5-10 wt.% of sodium carboxymethyl cellulose to 90-99.5 wt.% of water, and stirring the solution till the sodium carboxymethyl cellulose and the water are compounded to an uniform and transparent colloidal solution; (ii) adding conductive agent which is 0.5-10 wt.% of the total weight of the colloidal solution obtained in the step (i) and uniformly stirring the solution; (iii) adding the ferrous lithium phosphate which is 50-95 wt.% of the total weight of the obtained slurring in the step (ii) and uniformly stirring the solution; (iv) adding N-methylpyrrolidone (NMP) which is 1-20 wt.% of the total weight of the obtained slurry in the step (iii) and uniformly stirring it; and (v) adding butadiene styrene rubber which is 1-10 wt.% of the total weight of the obtained slurry in the step (iv) and uniformly stirring it. The sodium carboxymethyl cellulose is taken as a dispersing agent in step (i).