Abstract: For the discrete linear optimal tracking problem with previewed desired trajectory and disturbance, a preview control method based on information fusion estimation is presented. The optimal estimation of the optimal preview control law and the optimal preview performance index are derived. An information fusion preview control system is built up, which contains a state feedback control term and feedforward compensation terms of the target and the disturbance. Furthermore, the problems of the asymptotic characteristic and the steady-state tracking error of the preview control system are investigated. Simulation results show that the control performance is enhanced extremely and tends to be stable. Moreover, the information fusion preview control is superior to the traditional preview control when comprehensively considering the tracking error and the energy consumption.