To ensure that the road performance of Warm Mix Asphalt (WMA) still meets the specifications for recycled pavement even with a high proportion of Recycled Asphalt Pavement (RAP), additives are typically incorporated during the mixing process to enhance its road performance. Currently, research on the application of lignin fibers in warm mix recycling technology still has shortcomings, necessitating comprehensive studies on this technology from the perspectives of process systems and road performance, thereby realizing and promoting the application of fiber-reinforced warm mix recycling technology in practical engineering. This article primarily analyzes and evaluates the impact of RAP and lignin fibers on the road performance of WMA from the perspectives of high temperature, low temperature, and water damage resistance. The results indicate that incorporating RAP enhances the high-temperature stability of the recycled mixture, reduces its low-temperature crack resistance and water stability. This trend becomes increasingly evident as the proportion of RAP increases, and when the RAP content reaches 50%, the low-temperature performance of the recycled mixture no longer meets the specifications. Upon the incorporation of lignin fibers, the high-temperature performance, low-temperature performance, and water stability of the recycled mixture are generally improved, it indicating that lignin fibers can enhance the road performance of WMA, enabling it to meet the requirements for asphalt pavement use.