The invention provides a gate machine controller for a shield gate and a control method implemented by the gate machine controller. The gate machine controller is characterized in that a central processing unit is connected with a unit controller by a hard wire and receives gate opening and closing commands from the unit controller via an asynchronous serial communication module; the central processing unit is connected with a master monitor by a CAN (controller area network) bus and transmits state and fault information of the gate controller to the master monitor. The control method includes controlling the central processing unit by the aid of rotational speeds and currents in a double-closed-loop manner, particularly, controlling a rotational speed ring by means of fuzzy-PID (proportion, integration and differentiation), controlling the rotational speed ring by means of fuzzy-PID when the quantity of rotational speed errors is high, and controlling the rotational speed ring by means of traditional PID when the quantity of rotational speed errors is low; adjusting a current ring by means of conventional PID; controlling a motor by means of PWM (pulse width modulation). Compared with the prior art, the gate machine controller and the control method have the advantages that the shield gate can be quickly started and can quickly run, the running speed of the shield gate is stable, and the shield gate is high in interference resistance.