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This invention relates to the field of polymer materials technology, specifically to a toughened halogen-free heat-resistant polyolefin elastomer material and its preparation method. The invention involves mixing ethylene-vinyl acetate copolymer, polyolefin elastomer, polyethylene, compatibilizer, halogen-free flame retardant, flame retardant synergist, antioxidant, and lubricant in a mixer for 10-15 minutes to obtain a mixture. This mixture is then extruded and granulated using a twin-screw extruder and dried to obtain a toughened halogen-free heat-resistant polyolefin elastomer material. This material not only possesses excellent mechanical and flame-retardant properties but also exhibits good heat resistance, allowing it to maintain its mechanical properties even at high temperatures, making it suitable for a wider range of applications.