Abstract: The current predictive control strategy based on switched extended state observer (SESO) is proposed for controllable excitation linear synchronous motor (CELSM) . According to the working principle of the controllable excitation linear synchronous motor, the mathematical model is established, the deadbeat prediction current controller (DPCC) is designed. The extended state observer is used to observe and compensate the total disturbance. In this paper, the linear state extended observer (LESO) and the nonlinear state extended observer (NLESO) are designed, the advantages of the linear and nonlinear control strategies are combined with SESO by designing suitable switching rules. The observation accuracy and robustness are improved while the convergence rate of LESO is preserved. Finally, SIMULINK is used to simulate and compare the SESO-DPCC control strategy with LESO-DPCC control strategy. The results show that the SESO-DPCC control strategy can make the output current and torque of the controllable excitation linear synchronous motor more stable and have better parameter robustness.