Abstract: At present, robotic-assisted systems for total knee arthroplasty (TKA) still face certain technical limitations during the bone resection process. The conventional approach of using lower-limb fixators to immobilize the extremity suffers from two major drawbacks: increased risk of osteotomy error and prolonged operative time. To address these shortcomings, this study introduces an innovative real-time tracking “follow-motion”technology for orthopedic surgical robots. This approach enables the robotic arm to dynamically monitor and precisely follow subtle movements of osseous structures intraoperatively, thereby ensuring stability and accuracy of osteotomy. The system is designed to be compatible with multiple categories of end-effector tools, including cutting guides, cantilever saws, and milling devices, offering broad applicability. By integrating real-time follow-motion control, the robotic platform achieves significant improvements in both flexibility and precision, laying a solid foundation for further optimization and widespread clinical adoption of robotic joint surgery.