The invention relates to an elastomeric composite body, which comprises a solution polymerization synthesis rubber and a filler, wherein the filler is modified white carbon black or carbon black, a ration of the rubber to the filler is 100:30-110, and the filler aggregate particle size is 100 nm-10 [mu]m. The preparation method comprises: (1) in a non-polar organic solvent, preparing a modified white carbon black grinding slurry or carbon black grinding slurry, wherein the modified white carbon black grinding slurry or carbon black grinding slurry is recorded as the filler slurry, and the modified white carbon black or carbon black is recorded as the filler; (2) carrying out dispersed mixing on the filler slurry or filler and the rubber slurry according to a certain ratio under high energy shearing to form a composite body slurry rubber liquid; (3) dynamically removing the solvent from the uniformly dispersed and mixed composite body slurry rubber liquid through a dry method; and (4) carrying out shearing kneading drying on the solvent-removed composite body to obtain the product.