There are few studies on the temperature field of MR damper,and the existing technical means cannot be used to monitor the temperature distribution inside the damper.Therefore,considering the influence of temperature on the performance of the damper,it is very necessary to analyze the temperature field.The influence of temperature on the damping force and adjustable coefficient of the shock absorber was theoretically analyzed; considering the coupling of fluid solid heat transfer and flow field,the mathematical models of flow field and fluid solid heat transfer were established respectively.In the simulation software,the multi physical field coupling modeling of the damper was carried out,the temperature change of the MR damper was analyzed,and the flow state and change law of the internal MR fluid were obtained.The temperature field and flow field distribution state under different conditions were obtained by changing the piston head stroke and parametric scanning to change the damping clearance.