A method for constructing an auto disturbance rejection torque prediction controller of switch reluctance BSG motor the current detection module and the angle detection module respectively collect thecurrent ik and the angle signal thetak at the time of k, the speed calculating module calculates the rotational speed omega k at the k time through the angle, inputting the collected current ik and angle signal thetak at time k into a torque prediction controller, the torque value at k+1 time is predicted by the torque predictive controller, A torque predictive controller outputs an optimal control vector Sg, The switching reluctance motor (SRM) is ensured to run by switching on and off of the power converter through the optimal control vector. The collected speed signal Omega k is inputted to the ADRC, and the reference speed is given. The reference torque Te given by the torque predictive controller is obtained by the ADRC. The invention adopts the torque predictive control, which can realize the rolling optimization and correction of the model, improve the accuracy of the model and increase the stability of the control, thereby reducing the torque ripple.