<p>Ensuring the workability of asphalt mixtures is crucial for maintaining quality control during asphalt pavement construction. Although some scholars have studied methods to improve the workability of asphalt mixtures, the mechanical response characteristics and movement path rules of aggregate particles during mixing after workability improvement remain unclear. This paper investigates the influence of improved workability of asphalt mixture during mixing on the mechanical response and movement path characteristics of aggregate particles through a combination of discrete element simulation and field tests. Initially, a model of the asphalt mixture is developed using discrete element software, and its accuracy is verified through the analysis of impeller torque variations. Subsequently, the study examines the forces exerted on the impeller and the aggregate particles throughout the mixing process. Additionally, the migration velocity and displacement of aggregate particles are analyzed during the mixing. Improved workability facilitates easier compaction, which enhances construction quality and extends the lifespan of the asphalt pavement. Moreover, the use of warm mix agents and optimized mixing temperatures not only improves workability but also contributes to energy savings and reduced environmental impact. The results demonstrate that the asphalt mixture model is accurate. During the mixing process, the force on the mixing paddle, torque value, and workability index all exhibit a trend of first increasing, then decreasing, and finally stabilizing, which is consistent with the typical Stribeck friction curve. The use of warm mix additives or increasing the mixing temperature reduces the bonding force between asphalt and aggregates during mixing, thereby decreasing the average force on aggregate particles, increasing their migration velocity and displacement, and making it easier to achieve uniform mixing of the asphalt mixture.</p>