Abstract: The present invention relates to an optical resin composition having high impact resistance, heat resistance and refractivity and obtained by applying organic-inorganic hybrid, and a preparation method thereof. The optical resin composition is prepared from the following components by mass percent: 100% of a mixture A, 0.1-5% of an inorganic material, 0.05-6% of an ultraviolet absorber, 0.01-5% of a mold release agent, 0.01-5% of a polymerization initiator and 0.03-2% of a color regulator. The optical resin composition of the present invention can be used to prepare optical resin lenses characterized by light mass, easy formability, easy dyeability, high transparency, and high Abbe number, as well as high impact resistance, high heat resistance and high bending rate after surface coating.