Abstract: In order to improve the stability of the output speed of an electromagnetic coupling governor, this paper takes the electromagnetic coupling governor as the research object to analyze its dynamic characteristics. Firstly, this paper decouples the electromagnetic equation between the armature and the magnetic pole, performs the Clark-Park transform between the natural coordinate system and the rotational coordinate system of the motor, and derives its mathematical model. It also uses Matlab/Simulink to build a simulation model of the electromagnetic coupling governor. Then, it uses the first-order linear automatic disturbance rejection control (LADRC) technology to reasonably control the slip of the electromagnetic coupling governor. The simulation results show that LADRC has a better effect than the traditional PID control does, which improves the response speed and robustness of the slip control of the electromagnetic coupling governor. It also ensures the stability of the output speed when the load fluctuates, and improves the speed output performance of the electromagnetic coupling governor.