In this digest, a rapid adaptive phase algorithm based on golden section and bisection method (GSS_BI) is proposed to improve the performance of MPT system. In the proposed method, the mathematical model between the phase of the transmitters and the power of the receiver is established. Then the GSS_BI algorithm reduces the searching range based on the mathematical model and employs the bisection method to find the optimal phases. The simulation result demonstrates that the proposed method can reduce 89% of the number of iterations that is used by the conventional method when the number of transmitting antennas is 46.