Abstract: The system has the problem of mutual interference and harmonics between the signal and the system output voltage, when the energy channel of the bidirectional Inductively Coupled Power Transfer (ICPT) system is used to achieve signal interactive transmission. This paper, based on the series injection pick-up frequency-shift keying signal carrier modulation method, presents a bidirectional ICPT system's energy and signal synchronization transmission method, which uses a dual LCC resonance compensation network. Low-frequency carrier signal and high-frequency carrier signal are selected as 4 MHz and 5 MHz. The problem of mutual interference between energy and signal is analyzed using state space model and AC impedance method. A simulation model for the simultaneous transmission of energy and signal of the bidirectional ICPT system is built through the Matlab/Simulink simulation platform. The simulation results show that the system can achieve the maximum efficiency of bidirectional transfer of energy and zero error rate transmission of signals. The interferences between energy transfer and data transmission are quite small. The validity of the selected frequency points is verified by analyzing system BODE diagram.