To provide a light-diffusing resin composition useful as a material of a member composed of a light-diffusing molded article, for example, a cover or a lens for various displays where an LED is used, a lens cover, an illumination cover, a lighting signboard, a transmission screen, various displays, a light-diffusing sheet of a liquid crystal display device, a light guide plate, and the like.

The light-diffusing polycarbonate resin composition contains a polycarbonate resin (A) and polymer fine particles (B) having a refractive index different from that of the polycarbonate resin by 0.01-0.08 and having an average particle size of 5-20 μm, where the polymer fine particles are contained in the polycarbonate resin so that the compounding factor, represented by the product of an average particle size (μm) and the content (mass%) of the polymer fine particle, is 6.2-11.8.