The invention discloses a transparent anti-impact hard PVC particle composition and a preparation method thereof. The transparent impact-resistant hard PVC particle composition is characterized in that vinyl chloride-vinyl acetate-butyl acrylate ternary copolymerized resin is used as a bridging agent and cooperates with other modifiers, then mixed granulation is performed to obtain the transparent anti-impact hard PVC particle composition; the composition comprises the following components in parts by weight with each 100 parts by weight of PVC as the benchmark: 100 parts of polyvinyl chloride, 8-15 parts of an anti-impact modifier, 0-4 parts of a bridging agent, 1-3 parts of a heat stabilizer, 2-3 parts of a plasticizer, 0.3-0.8 part of a lubricant, and 0.1-0.3 part of a color toner. By selection of the particle size of anti-impact modifier colloidal particles and introduction of the vinyl chloride-vinyl acetate-butyl acrylate ternary copolymerized resin as the bridging agent, the transparent anti-impact rigid PVC particle formula is improved, the purpose of improving the impact resistance and transparency of the material is finally reached, and the requirements of high-quality transparent anti-impact hard PVC products on high transparency and high impact resistance are met.