The invention discloses a method for preparing lithium ion battery anode pulp. The method comprises the following steps: (1) mixing CMC with deionized water, and uniformly dispersing to prepare CMC glue solution; (2) adding conductive carbon black into the CMC glue solution obtained in the step (1), and uniformly dispersing; (3) adding a carbon material, and uniformly dispersing; (4) adding LA133, and uniformly dispersing; (5) adjusting the viscosity with deionized water; and (6) vacuumizing to remove foam, and filtering to obtain the lithium ion battery anode pulp. The water-borne adhesive combined with CMC and LA133 is adopted, the suspending stability of lithium ion battery pulp is promoted by synergistic effect of CMC and LA133 by controlling the specific content of CMC and LA133 and the specific preparation method, the caking performance of anode pieces can be ensured, the dusting phenomenon can be prevented, the proportion of active substances is effectively increased on the basis of ensuring product stability, and the battery energy density is improved.