Regarding the issue of wireless power transmission efficiency being affected by special charging structures and inevitable displacement of mobile loads. This paper establishes a wireless power transmission system based on a bilateral dispersed magnetic coupling structure. A series topology structure is adopted on two transmitting coils and a receiving coil. The transmitting coil uses LCC compensation, the receiving coil uses series capacitor compensation. Power and efficiency characteristic curves of charging system with respect to position change are studied. According to the research results, the system structure is improved, anti-offset ability of the system is enhanced. The reliability of power transmission between transmitter and receiver is improved.