NOVELTY - A lithium-nickel-cobalt-manganese oxide material compounding method involves preparing compact small-grained spherical lithium-nickel-cobalt-manganese oxide powder by weighing soluble nickel, cobalt and manganese, mixing to obtain mixed salt solution-A, adding ammonia water, ammonium salt, sodium hydroxide or potassium hydroxide with precipitant solution and complexing agent solution to obtain solution-B, heating at 40-70 degrees C under inert atmosphere, stirring, maintaining a pH value at 11.7-13, and reacting at constant temperature for 24-35 hours to obtain compact small particle.    USE - Method for compounding lithium-nickel-cobalt-manganese oxide material for a lithium ion battery.    ADVANTAGE - The method enables compounding lithium-nickel-cobalt-manganese oxide material in a simple and inexpensive manner.    DETAILED DESCRIPTION - A lithium-nickel-cobalt-manganese oxide (LizNixCoyMn1-x-yO2) material compounding method involves preparing compact small-grained spherical lithium-nickel-cobalt-manganese oxide powder by weighing soluble nickel, cobalt and manganese mixing to obtain mixed salt solution-A, adding ammonia water, ammonium salt, sodium hydroxide or potassium hydroxide with precipitant solution and complexing agent solution to obtain solution-B, heating at 40-70 degrees C under inert atmosphere, stirring at 300-400 rpm, maintaining the pH value at 11.7-13, and reacting at constant temperature for 24-35 hours to obtain compact small particle. The obtained compact particle is washed, followed by drying at 100-140 degrees C, soaking resin column, centrifuging at 700-1000 rpm for 5 minutes to obtain a homogeneous mixture, treating homogeneous mixture at 350-470 degrees C for 4-8 hours, raising the temperature to 900-950 degrees C for 15-18 hours, cooling to room temperature and sieving through 200-400 meshes sieve. The resultant product is compounded by placing the compact spherical particle in a dry mixer, centrifuging at 300-500 rpm for 10-20 minutes to obtain finished product.