The invention discloses a light-weight wear-resistant polycarbonate material for a water cup shell. The light-weight wear-resistant polycarbonate material is characterized by being prepared from the following raw materials in parts by weight: 500-520 parts of polycarbonate, 24-28 parts of ABS (acrylonitrile-butadiene-styrene), 15-18 parts of PBT (polybutylece terephthalate), 6-9 parts of bismaleimide, 14-18 parts of low-density polyethylene, 10-12 parts of silicon dioxide, 6-9 parts of pentaerythritol triacrylate, 1-2 parts of zinc stearate, 2-3 parts of vinyl-tri(beta-methoxyethoxy) silane and 10-12 parts of auxiliary agents. The ABS is added into the polycarbonate material for modification, so that the polycarbonate material has the characteristics of low density, light weight, high impact strength, wide usage temperature range, good product forming processability without deformation, stable quality, bright and clean surface, safety, environment friendliness and nontoxicity to human bodies, and the strength can not be reduced.