▎ 摘　　要

NOVELTY - A lithium ion secondary battery composite anode material preparing method involves dispersing graphite in an organic dispersant, adding a surfactant, dispersing the electrode for 10 hours to obtain a graphene dispersion. Lithium carbonate, manganese-containing compound, iron-containing compound and phosphorus-containing compound are uniformly mixed in an organic dispersant, and added to the mixture. The precursor is sintered at 500-600 degrees C for 6-8 hours to obtain a sintered product of lithium ferrohydromanganese phosphate, which is obtained by heating and stirring the solvent. USE - Method for preparing lithium ion secondary battery composite anode material. DETAILED DESCRIPTION - A lithium ion secondary battery composite anode material preparing method involves dispersing graphite in an organic dispersant, adding a surfactant, dispersing the electrode for 10 hours to obtain a graphene dispersion. Lithium carbonate, manganese-containing compound, iron-containing compound and phosphorus-containing compound are uniformly mixed in an organic dispersant, and added to the mixture. The precursor is sintered at 500-600 degrees C for 6-8 hours in a mixed atmosphere of argon to obtain a sintered product of lithium ferrohydromanganese phosphate, which is obtained by heating and stirring the solvent until the solvent is completely evaporated to obtain a reaction precursor and anode material. INDEPENDENT CLAIMS are also included for the following: (1) a lithium ion secondary battery composite anode material (2) a lithium ion secondary battery.