<p>To further investigate the deformation characteristics of high loess fill slopes under dynamic compaction, we utilized ABAQUS finite element software to analyze the deformation processes influenced by varying slope angles, tamping energies, and tamping distances. Our findings indicate that when the tamping position is near the top of the slope, the soil around the tamping hammer can be categorized into four distinct zones: failure zone, strong compaction zone, weak compaction zone, and elastic disturbance zone. As the distance between the ram and the slope shoulder decreases, the influence range of horizontal displacement on the left side of the ram diminishes, while the influence range of vertical displacement on the right side increases. When the distance between the tamping hammer and the slope shoulder is fixed, the effective vertical reinforcement range on both sides of the tamping hammer gradually expands with an increase in tamping energy. Additionally, as the distance between the ram and the slope shoulder decreases, the maximum vertical effective reinforcement influence range on the left side of the ram decreases, whereas the maximum vertical effective reinforcement influence range on the right side increases, leading to the vertical reinforcement range on the right side typically being greater than that on the left. Based on these calculations, we propose an optimal combination of parameters, including the distance between the tamping hammer and the slope shoulder, tamping load, and tamping frequency, to enhance the stability of high loess fill slopes. This research offers valuable insights and guidance for practical engineering applications.</p>