Porous metal foam magnetorheological fluid damper is a new damper using the foam metal storage of the MRF. By MR damper performance test, we studied the relationship between the damping force and different currents, a magnetorheological damper forward model is set up by BP neural network. Simulation results show that the neural network model can accurately predict the MR damper damping force and control current, and it also proves the effectiveness of this method. Compared with the existing model, the calculation is simple with high accuracy.