The invention discloses an intelligent electric controller based on grid cycle frequency. The intelligent electric controller comprises a cycle frequency detecting module, an electric energy measuringmodule, a real-time electricity price generating module, an energy charge measuring module, a battery energy detecting module, a human-computer interaction module, an electric decision module and a charge control module. The cycle frequency detecting module and the electric energy measuring module are separately connected to a power grid, and the real-time electricity price generating module andthe electric decision module are sequentially arranged between the cycle frequency detecting module and the charge control module; and the electric energy measuring module is separately connected to the human-computer interaction module and the energy charge measuring module, the real-time electricity price generating module is further connected to the energy charge measuring module, and the energy charge measuring module is connected to the human-computer interaction module. The intelligent electric controller performs electric peaking and frequency modulation from the electric side, adjustment capacity is large and the speed is high, and the safe and stable operation of the power grid is facilitated; the capacity of the power grid to accommodate wind energy, solar energy and the like toaccess is improved, and promotion of wide application of new energy sources is facilitated; and the user economic electricity consumption is guided, and good social benefits are achieved.