The invention discloses an electric steering engine driving device. The device comprises a controller, an isolation circuit, a brushless motor commutation module, a power driving module, a three-phase inversion circuit, a brushless direct current motor, a current sampling circuit, a gear reduction mechanism and a control surface. The controller, the isolation circuit, the brushless motor commutation module, the power driving module, the three-phase inversion circuit and the brushless direct current motor are successively connected in series. A signal output terminal of a Hall speed sensor is connected to the brushless motor commutation module and the controller. The brushless direct current motor is connected to the gear reduction mechanism. The current sampling circuit is connected to the brushless direct current motor and the controller. The controller acquires a control signal according to a received speed, a current and a position signal and sends to the brushless motor commutation module. The brushless motor commutation module generates a control signal to the power driving module and controls work of the brushless direct current motor through the three-phase inversion circuit. The brushless direct current motor drives the control surface to rotate through the gear reduction mechanism so that the control surface follows a given signal of the control surface.