The invention discloses a high-glowing filament scratch-resistant PC material suitable for a tablet computer shell and a preparation method thereof. The material is prepared from, by weight, 65-70% of PC, 10-14% of flame retardant, 10-18% of scratch-resistant agent, 4-6% of toughening agent, 0.4-0.6% of anti-dripping agent, 0.1-0.2% of primary antioxidant, 0.3-0.4% of auxiliary antioxidant, 0.5-0.6% of lubricating agent and 0.3-0.5% of weather-proof agent. Engineering plastic PC is used as a main material, the halogen-free flame retardant, the toughening agent, the scratch-resistant agent, anti-dripping agent, the antioxidants, the weather-proof agent and the lubricating agent are added, all the materials are subjected to melt blending through a double-screw extruder, and the high-glowing filament scratch-resistant PC material suitable for the tablet computer shell is prepared. The material has the advantages of low price, low weight, scratch resistance, good weather fastness, halogen-free flame retardation, high-glowing filaments, excellent mechanical properties, high practicability and the like. Meanwhile, the preparation method of the material is simple and easy to implement and can be widely applied to industrial production.