Wireless power transfer(WPT)technology has become a hotspot of research at home and abroad because of its unique transmission advantages.With the deepening of the research,there is an urgent need to improve the output power of WPT system at this stage,for this reason,this paper proposes a dual-frequency channel-based power boosting method for WPT system.At the power transmitting end,a dual resonant network is used to construct a dual-frequency channel for resonance compensation,and through the configuration of its parameters,the WPT system can be made to be in a resonant state at both the fundamental and the third harmonic frequencies,so that the power can be transmitted at the same time under the two frequencies.The paper analyzes the overall structure and working principle of the system,and compares the difference between the dual-frequency channel and the single channel in terms of output power,and the power isincreased from 166 W of the traditional single channel to 295 W under the given parameters,which is an increase of about 78%,and the efficiency can reach up to 95%.The selection of the optimal operating point ofthe system is given based on the system efficiency and output power.The theoretical analysis is verified by building an experimental platform,and the experimental results show the superiority and feasibility of the output power enhancement method of the WPT system proposed in this paper.