In　this　paper,　a　coupling　coil　structure　suitable　for　wireless　charging　of　electronic　equipment　is　designed.　The　coil　is　designed　with　PCB.　The　structure　comprises　an　8-shaped　receiving-transmitting　coil　and　two　relay　resonance　coils　on　the　same　plane.　When　multiple　transmitter　coils　are　arranged　in　a　row,　the　mutual　inductance　remains　relatively　constant　during　the　offset　process　of　the　load　coil,　which　can　effectively　reduce　the　power　fluctuation　during　the　charging　process.　Three-dimensional　finite　element　simulation　analysis　and　experiments　were　performed　on　the　system　under　the　conditions　of　alignment　and　offset,　Experimental　results　show　that　when　the　coils　are　well　aligned,　the　proposed　wireless　power　transfer　(WPT)　system　can　achieve　a　peak　efficiency　of　92.7%.　©　2021　IEEE.