NOVELTY - A composite cathode material preparing method involves mixing tetrabutyl titanate with organic solvent. The mixture is stirred to obtain clear solution. Lithium acetate is added into the solution. The resulting product is placed in an oven to obtain the lithium titanium oxide-titanium dioxide precursor. The precursor is heated, and the heated precursor is cooled to obtain lithium titanium oxide-titanium dioxide powder. The powder and carbon source are added into a solvent, and the mixture is subjected to an evaporation process. The powder is cooled to obtain composite cathode material.    USE - Method for preparing composite cathode material for a lithium ion battery that is utilized in an electronic equipment, an electric vehicle and aerospace applications.    ADVANTAGE - The composite cathode material has fine and uniform particle size, uniform particle distribution, high magnification property and cyclical stability.    DETAILED DESCRIPTION - A composite cathode material preparing method involves selecting analytically pure tetrabutyl titanate as a titanium source, and mixing the tetrabutyl titanate with organic solvent. The mixture is stirred uniformly to obtain clear and transparent solution, where amount of titanium is 0.000-0.1 mole/ml solvent. Pure lithium acetate is utilized as a lithium source and added into the clear solution, where atomic ratio of the lithium and the titanium is 0.8:1.6. The mixed solution is stirred uniformly, and pure ammonia water (25-28 wt.%) is utilized as a pH value adjusting agent and added into the solution, where amount of ammonia water is 8 ml. The solution is put into a high pressure kettle and subjected to a thermal reaction at140-180 degrees C for 12-4s hours. The resulting product is washed using anhydrous alcohol, filtered and placed in an oven at 80-120 degrees C to obtain the lithium titanium oxide-titanium dioxide precursor. The precursor is heated in an air atmosphere 450-650 degrees C for 1.5-4 hours, and the heated precursor is cooled at room temperature to obtain lithium titanium oxide-titanium dioxide powder. The powder and carbon source are added into a solvent, and the mixture is stirred uniformly and subjected to a rotary evaporation process such that the carbon source is uniformly coated on a surface of particles of the powder. The powder is heated at 550-650 degrees C for 1-5 hours under inert protective atmosphere, and the heated powder is cooled at room temperature to obtain composite cathode material.