This paper addresses the problem of large differences in transmission efficiency between different horizontal positions of multiple loads, and finally to improve the coil’s ability to resist horizontal offset, and an edge-enhanced uniform magnetic field distribution coil is proposed. The design solution is proposed. In order to further improve the transmission efficiency of the system, a uniform magnetic field distribution coil with high transmission efficiency is proposed and simulated and analyzed using Ansys Maxwell software. The edge-enhanced uniform magnetic field distribution coil has a maximum reduction of 27.6% in coupling coefficient decay; the high transmission efficiency uniform magnetic field distribution coil has a 21.4% increase in coil coupling coefficient compared to the planar spiral coil and a maximum reduction in coupling coefficient decay of 20.1%.