The invention discloses an intelligent follow-up electric energy correcting device. The intelligent follow-up electric energy correcting device structurally comprises a PLC control unit, a DSP processing unit, a servo system, an output end transmitter, an input end transmitter, an internal transmitter, a current transformer, a voltage transformer, a motor, an automatic coupling voltage regulator and an intensive intelligent capacitor, wherein the PLC control unit is connected with the output end transmitter, the input end transmitter, the internal transmitter, the DSP processing unit and the servo system, the current transformer and the voltage transformer are connected to the internal transmitter, the output end of the servo system is connected to the input end of the motor, the motor is connected with and drives the automatic coupling voltage regulator, and the automatic coupling voltage regulator is connected to the intensive intelligent capacitor. The invention further provides an indicating analysis method based on the intelligent follow-up electric energy correcting device. The method comprises the steps that according to an intelligent load cycle curve, changes of the inductive reactive power of a power grid are automatically tracked, the follow-up equivalent value of capacitive reactive power needing to be input to meet the specific control physical quantity is initiatively predicted, a control simulation curve is automatically generated, the loaded automatic coupling voltage regulator is controlled according to simulation data, the terminal voltage of a compensating capacitor is regulated, and thus an intelligent compensating power curve matched with the load cycle curve is obtained.