The object of the present invention is provide a drive control system of an electric vehicle that can prevent overshoot of the amount of slip. The drive control system of the electric vehicle includes: a motor to drive a driving wheel; a PDU; a number-of-revolution sensor that detects the number of revolutions of the motor; a grip number of revolutions calculating device for calculating the current grip number of revolutions of the motor; a motor power limiting value calculating portion and a conversion portion that determines the limiting torque value of the motor; and a driving torque determining portion that determines the driving torque of the motor.