Direct force control (DFC) with the advantages of simple structure, fast force response, superior control performance, is developed from direct torque control (DTC). So, it is attracting more attention, increasingly becoming a research hot in the control field. It is a valuable research to improve the operation stability of PMLSM by the direct force control. In this paper, based on DFC principle analysis, the force control and flux control theory of DFC is studied according to the mathematical model of PMLSM. The structure and implementation method of DFC is analyzed, and then the DFC system simulation model for PMLSM is built by Matlab/Simulink. The simulation results show the feasibility of the simulation model, with good static and dynamic performance.