NOVELTY - A composite positive pole material preparation method involves mixing lithium source, nickel source, cobalt source and manganese source with de-ionized water to obtain mixed solution-A, followed by mixing citric acid and ethylene glycol in alcohol to obtain mixed solution-B. The solution-A is mixed with the solution-B to obtain a mixture. The mixture is heated in a water bath to obtain citric acid complex with metal ion, followed by increasing the temperature. The citric acid complex is heated and subjected to esterification by using ethylene glycol to obtain an esterification product.    USE - Method for preparing composite positive pole material for use in a lithium ion power battery.    ADVANTAGE - The method enables preparing composite positive pole material with high specific capacity, excellent circulation performance and better power performance in a simple manner.    DETAILED DESCRIPTION - A composite positive pole material preparation method involves mixing lithium source, nickel source, cobalt source and manganese source with de-ionized water to obtain mixed solution-A, followed by mixing citric acid and ethylene glycol in alcohol to obtain mixed solution-B. The solution-A is mixed with the solution-B to obtain a mixture. The mixture is heated in a water bath at 60 degrees C by magnetic force stirring to obtain citric acid complex with metal ion, followed by increasing the temperature to 95 degrees C. The citric acid complex is heated and subjected to esterification using ethylene glycol to obtain an esterification product, which is changed into wood adhesive solution, followed by drying viscous fluid in a vacuum drying box at 120 degrees C to obtain a dried product. The dried product is ground to obtain polymer precursor. The precursor is heated at 450-550 degrees C for 3 hours to obtain lithium-nickel-cobalt-manganese-oxide (LiNi1/3Co1/3Mn1/3O2) powder. The resultant powder is heated at 800-950 degrees C for 6 hours. The heated powder is mixed with carbon nanotubes at a mass ratio of 95-X:X to obtain a mixed material. The material is ball milled for 12 hours to obtain a finished product comprising lithium-nickel-cobalt-manganese-oxide- carbon nanotubes (LiNi1/3Co1/3Mn1/3O2/CNTs), where X is 3, 5 or 8.