Asphalt heat recycling modifier

The invention discloses an asphalt heat recycling modifier, comprising the following ingredients by weight percent: 25-45% of linear low density polyethylene, 20-35% of low density polyethylene, 15-25% of ethylene-vinylacetate copolymer, 5-10% of rock asphalt with needle penetration of 0-0.5mm, 3-8% of emulsified asphalt with solid content of 50-55%, 8-13% of fibre stabilizer, and 1-3% of antistripping agent. The modifier has the advantages of less additive amount, easily-obtained raw materials, low cost, harmlessness and environmental protection, realizes 100% hot recycling of old asphalt mixture, and obviously improves high-temperature performance, low-temperature performance, water stability performance and fatigue performance of hot-recycled asphalt mixture.