[Objective] The flux switching magnetic suspension linear motor (FSMSLM) has a limited heat dissipation space and concentrated heat sources, which can lead to significant temperature rise and adversely affect its operation. To address this, the losses in various motor components are calculated, and a temperature field simulation is performed to design a targeted cooling system that ensures efficient heat dissipation. [Methods] Firstly, the structure and operating principle of the FSMSLM were introduced, followed by the calculation of losses and heat generation rates for each motor component. A mathematical model of the temperature field was established, and the thermal conductivity coefficients of the motor components were obtained using empirical formula. The convective heat transfer coefficients for the relevant surfaces were derived by combining simulation results of the external flow field with the empirical formulas. Finally, finite element simulations were carried out to determine the overall temperatur