Combined with the requirement of vehicles damper, two type of dampers were designed and manufactured by analyzing the two working pattern of MRF. The comparison between simulation and the experiment result shows that the difference of damp force is small in low speed and large in high speed. It is obvious that the performance of the mixed model is more excellent than the flow model. It has higher control rate and can reduce the jam of the damp hole in practice. It is certified that the magnetorheological fluid damper (MRD) model and the design idea and methods are correct and accord with the requirement of engineering.