The invention provides a distributed driving electric-vehicle dual-motor torque balance control method and device. The control method comprises the following steps of acquiring the current operation state of each motor and calculating the current torque of each motor; according to the current torque of each motor, predicting a predicted torque corresponding to each motor under each voltage vectorin a next control period; setting the rotating speed reference value of each motor, according to the rotating speed reference value, calculating the reference torque value of each motor, averagely distributing the sum of the reference torque values of each motor and acquiring a distributed reference torque value; making the predicted torque of each motor follow a correspondingly distributed reference torque and selecting the optimal voltage vector of each motor in the next control period; and controlling each motor in the next period through applying the corresponding optimal voltage vector. In the technical scheme of the invention, the motor does not need to be repeatedly adjusted so that the instability of a system is not generated.