In this study, a novel light diffusing film containing core-shell-like structure was easily prepared by melt blending Polycarbonate (PC) with Poly (styrene-co-acrylonitrile) (SAN) and Organic Silicone Beads (OSBs) in a HAPROTM Rheometer. The compatibility between OSBs and polymers was studied via glass transition temperature (Tg) by DSC and the result showed that the OSBs is more miscible with SAN. The morphology of dispersed phase was examined by scanning electron microscope (SEM). It can be seen that the SAN was dispersed in PC as “sea-island” structure, and the OSBs was selectively localized in SAN phase, like a core-shell structure (the “core” is OSBs and the “shell” is SAN phase). Optical properties include haze, transmittance, UV-VIS spectra, diffusing pattern and scattering angle were investigated in detail. On the one hand, the size of SAN particles and core-shell-like microspheres were increased with increasing amount of SAN, hence the haze and transmittance were modulated simultaneously. On the other hand, the formation of “core-shell-like” structure improved the scattering angle due to multi-scattering effect, resulting in larger diffusing scale. The scattering angle of PC-70/SAN-30/OSB blend reaches 54°, increased by 80% compared with PC/OSB blend, while the haze and transmittance are little affected. In general, the novel PC/SAN/OSBs light diffusing film containing core-shell-like structure was easily prepared by melt blending method, which obtained high haze, high transmittance as well as wide scattering angle. Keywords: Light diffusing film, Core-shell-like structure, Melt blending method, Polycarbonate, Scattering angle, Haze, Transmittance