The invention provides a process method for preparing high-performance carbon black masterbatch, relating to the technical field of carbon black masterbatch preparation processes. The wet-method carbon black masterbatch preparation process method provided by the invention is simple in process, low in energy consumption and excellent in performance. The method comprises the steps: soaking non-granulated carbon black powder in an aqueous solution of a micromolecular volatile solvent, so as to prepare uniformly-dispersed carbon black slurry; flocculating out masterbatch and carbon black at a certain stirring linear speed without adding other flocculating agents, filtrating and drying. The carbon black in the masterbatch prepared by the method disclosed by the invention reaches nano dispersion, vulcanized rubber has the advantages of excellent mechanical property, good resilience, low heat generation and high wear resistance, the preparation process is simple, the equipment investment is small, the energy consumption is low, the cost is low, the method is environmental-friendly, and the influence on the performance of the rubber and the pollution to the environment, caused by a surfactant, a flocculating agent and the like, are avoided.