Abstract: The traditional mine hoists mostly adopt the driving mode of AC asynchronous motor-reducer, which has obvious speed fluctuation, large starting current impact and high energy consumption during operation. The permanent magnet driven hoist is gradually applied to the mine hoisting system with the advantages of low speed, large torque and low energy consumption. In this paper, the dynamic characteristics of permanent magnet-driven hoist under different loads are studied in view of the complex working conditions such as nonlinear and strong coupling when the drum is running. Based on the dynamic theory and vector control mechanism of mine hoist system, the electric-mechanical joint simulation model of permanent magnet driven hoist is established by using SimulationX software, and the dynamic characteristics of hoist operation under no-load and heavy-load actual working conditions are studied. The research shows that under the vector control system, the speed and electromagnetic torque of the high-power permanent magnet driven hoist can be quickly closed-loop, the current response is smooth, the starting torque of the hoist is large, and the operation is stable. The research results provide a theoretical basis for the safe and efficient operation of the permanent magnet drive hoist.