The invention discloses an ABS (acrylonitrile-butadiene-styrene)-modified polycarbonate material for a water cup shell. The ABS-modified polycarbonate material is characterized by being prepared from the following raw materials in parts by weight: 500-520 parts of polycarbonate, 10-15 parts of ABS carbomer powder, 15-17 parts of polycaprolactone, 3-5 parts of methyl trimethoxy silane, 2-4 parts of stearoyl-rac-glycerol, 8-10 parts of polyethylene wax powder, 0.5-0.7 part of an antioxidant 1010 and 10-12 parts of auxiliary agents. ABS is added into the ABS-modified polycarbonate material disclosed by the invention for modification to ensure that the wear resistance and the impact strength of the polycarbonate material are enhanced, and the material has the high strength and elasticity coefficient, a wide usage temperature range and the good weathering resistance, the production process of the material is simple, the cost is low to facilitate the industrial production, and the material is tasteless and odorless, is harmless to human bodies and accords with sanitary safety.