A wireless power feeding system comprising: a plurality of power transmission antennas (44, 54, 64), each comprising a resonance circuit including a power transmission coil (43, 53, 63) and a capacitor (42, 52, 62) located so as to generate a magnetic field in a desired direction, and a switch (45, 55, 65); a controller adapted to control a resonant state of the resonance circuit of each of the plurality of power transmission antennas (44, 54, 64); a plurality of driving units (41, 51, 61) adapted to apply an AC voltage to the plurality of power transmission antennas (44, 54, 64) to drive each of the plurality of power transmission antennas (44, 54, 64); and a power supply unit adapted to supply a voltage to the driving units (41, 51, 61); wherein the controller is adapted to control, among the plurality of power transmission antennas (44, 54, 64), one power transmission antenna from which a magnetic field is to be generated to place the resonance circuit of the one power transmission antenna in a resonant state, the controller is adapted to control, among the plurality of power transmission antennas (44, 54, 64), all of the at least one remaining power transmission antenna from which a magnetic field is not to be generated to place the resonance circuit of the all of the at least one remaining power transmission antenna in a nonresonant state; and the controller is adapted to turn on and off the switch (45, 55, 65) of each of the plurality of power transmission antennas (44, 54, 64) to control the resonant state of each of the plurality of power transmission antennas (44, 54, 64); characterized in that the switch (45, 55, 65) is connected to both ends of the capacitor (42, 52, 62) and/or of the power transmission coil (43, 53, 63). a plurality of power transmission antennas (44, 54, 64), each comprising a resonance circuit including a power transmission coil (43, 53, 63) and a capacitor (42, 52, 62) located so as to generate a magnetic field in a desired direction, and a switch (45, 55, 65); a controller adapted to control a resonant state of the resonance circuit of each of the plurality of power transmission antennas (44, 54, 64); a plurality of driving units (41, 51, 61) adapted to apply an AC voltage to the plurality of power transmission antennas (44, 54, 64) to drive each of the plurality of power transmission antennas (44, 54, 64); and a power supply unit adapted to supply a voltage to the driving units (41, 51, 61); wherein the controller is adapted to control, among the plurality of power transmission antennas (44, 54, 64), one power transmission antenna from which a magnetic field is to be generated to place the resonance circuit of the one power transmission antenna in a resonant state, the controller is adapted to control, among the plurality of power transmission antennas (44, 54, 64), all of the at least one remaining power transmission antenna from which a magnetic field is not to be generated to place the resonance circuit of the all of the at least one remaining power transmission antenna in a nonresonant state; and the controller is adapted to turn on and off the switch (45, 55, 65) of each of the plurality of power transmission antennas (44, 54, 64) to control the resonant state of each of the plurality of power transmission antennas (44, 54, 64);