The invention discloses an EPS control system. The EPS control system comprises a main controller connected with an H-bridge drive module, the H-bridge drive module is connected with an H-bridge module, and the first output end of the H-bridge module is connected to the first input end of a motor; the second output end of the H-bridge module is connected to the first input end of a second relay module, and the first output end of the second relay module is connected to the second input end of the motor; the main controller is connected to the first drive signal input end of a second relay drive module, and the second relay drive signal output end of an auxiliary controller is connected to the second drive signal input end of the second relay drive module; and the drive signal output end ofthe second relay drive module is connected to the drive signal input end of the second relay module. The EPS control system better controls the operation of the motor by setting the auxiliary controller and jointly controls the second relay drive module by the main controller and the auxiliary controller to drive the second relay module to close and open, and the motor is more safe and reliable.