The invention relates to a wireless charging coil, and belongs to the technical field of wireless charging. The wireless charging coil comprises an excitation layer and coil annular loops wound by thesame insulating wire, wherein the coil annular loops includes a first coil annular loop and a second coil annular loop, the first coil annular loop is arranged on the upper end face of the excitationlayer, and the plane where the first coil annular loop is located is parallel to the excitation layer; and the second coil annular loop is arranged around the upper and lower end faces and two side surfaces of the excitation layer. The two coil annular loops are designed by using the same insulating wire, so that the magnetic field generated by the wireless charging coil after being electrified is enabled to be strengthened. Compared with the wireless charging coil in which the same insulating wire only forms one coil annular loop in the prior art, the excitation effect is enhanced, and the wireless charging efficiency and the practicability of the charging coil are improved.