Abstract: ［Objective］ The lift wing structure of high-speed railway EMU (electric multiple units) can reduce the wheel-rail frictional resistance, thereby decreasing wheel wear. However, due to the complex and variable operating conditions of high-speed railway EMU, the dynamic loads on the lift wing constantly fluctuate. To ensure the safe and efficient operation of EMU while maximizing the energy-saving and drag-reduction performance of the lift wing structure, a suitable control scheme for the lift wing is required. ［Method］ The overall structural composition of the lift wing is introduced, and an active control scheme for its motion is proposed. A decoupling control algorithm for a multi-variable coupled system based on position tracking is designed for the bottom rotation mechanism. For the angle-of-attack transformation mechanism, a cross-coupled collaborative control algorithm based on LADRC (linear active disturbance rejection control) is developed. A control process and in-place parking circuit scheme is designed for the wing-tail extension mechanism. Simulation models are constructed to validate the control performance of the proposed bottom rotation and angle-of-attack transformation control schemes. ［Result & Conclusion］ The active control scheme for lift wing structure motion can meet the functional requirements of the lift wing, including the positioning accuracy of the bottom rotation mechanism, the synchronization control requirements of the angle-of-attack transformation mechanism, and the uniform motion and in-place parking requirements of the wing-tail extension mechanism. This scheme addresses deficiencies in existing control methods, enhancing the safety, stability, and reliability of the lift wing.