Abstract: Silicone crosslinked microspheres were prepared and their optimal preparation technology was developed. A type of light-diffusing polycarbonate (PC) resin for LED lampshades and lamp tubes was prepared by compounding PC with the resulting microspheres through directly melt blending and melt blending with masterbatch, and its performance was investigated. The results indicated thatthe haze of PC was improved but its high light transmittance was maintained when 0.15 wt % of light diffusing agent was added. However, its impact strength decreased due to the presence of light diffusing agent.Moreover, the masterbatch process was found to be more effective than the direct melt-blending method. The anti-aging property of light-diffusing PC was significantly enhanced due to the presence of UV absorber.