The invention relates to an intelligent controller of an electric furnace electrode. A plurality of digital/analog input and output channel modules are spliced with a single-board computer, and exterior terminals of the modules are connected with an electric furnace electrode unlocking operation switch, an elevating operation switch, a control valve of a locking device, a control valve of an elevating device, an upper and a lower space-limiting switches of a furnace cover, a manual/automatic switching switch, a current and voltage detection end, a current setting potentiometer, a transformer reactor shift and a fault comprehensive signal of an electric furnace control system. The electrode adjusting calculation method consists of an automatic arcing algorithm of equal arcing distance, a window current integrator overcurrent control algorithm, and a near reverse internal model control method based on a LSSVM-NARMA model. The electrode adjusting algorithm also comprises a PID control method, provides modeling data for the reverse internal model control method, is an alternative control method, and has the characteristic of quick and accurate electrode adjustment. The invention can significantly shorten the smelting period, save the electric energy, reduce the energy consumption, and is suitable for organizations of electric furnace smelting, and the like.