A wireless power transmitter comprising: a power conversion unit comprising a converter for converting voltage received from a power supplier into specific voltage; a power transmission unit comprising a wireless power transmission coil for wirelessly transmitting power using a specific resonance frequency based on the specific voltage from the power conversion unit; a communication unit for performing data communication with a wireless power receiver; and a controller for controlling the power conversion unit, the power transmission unit, and the communication unit, wherein the wireless power transmission coil comprises an outer coil (910, 1010, 1110) unit having a first loop shape and an inner coil (920, 1020, 1120) unit having a second loop shape, the inner coil (920, 1020, 1120) unit being disposed in the first loop shape, a direction of current flowing in the outer coil (910, 1010, 1110) unit is opposite a direction of current flowing in the inner coil (920, 1020, 1120) unit, which is adjacent to the outer coil (910, 1010, 1110) unit, and a direction of a magnetic field generated by the current flowing in the outer coil (910, 1010, 1110) unit and a direction of a magnetic field generated by the current flowing in the inner coil (920, 1020, 1120) unit are identical in a first region between the outer coil (910, 1010, 1110) unit and the inner coil (920, 1020, 1120) unit, which is adjacent to the outer coil (910, 1010, 1110) unit, a connection unit (940, 1030) is provided for interconnecting the outer coil (910, 1010, 1110) unit and the inner coil (920, 1020, 1120) unit, and the outer coil (910, 1010, 1110) unit and the inner coil (920, 1020, 1120) unit are connected to the power conversion unit via a matching circuit, which is configured to match impedance between the power conversion unit and the power transmission unit, the outer coil (910, 1010, 1110) unit and the inner coil (920, 1020, 1120) unit, which is adjacent to the outer coil (910, 1010, 1110) unit, are spaced apart from each other by a first distance, and the first distance is determined based on a magnitude of current flowing in the power transmission unit. a power conversion unit comprising a converter for converting voltage received from a power supplier into specific voltage; a power transmission unit comprising a wireless power transmission coil for wirelessly transmitting power using a specific resonance frequency based on the specific voltage from the power conversion unit; a communication unit for performing data communication with a wireless power receiver; and a controller for controlling the power conversion unit, the power transmission unit, and the communication unit, wherein the wireless power transmission coil comprises an outer coil (910, 1010, 1110) unit having a first loop shape and an inner coil (920, 1020, 1120) unit having a second loop shape, the inner coil (920, 1020, 1120) unit being disposed in the first loop shape, a direction of current flowing in the outer coil (910, 1010, 1110) unit is opposite a direction of current flowing in the inner coil (920, 1020, 1120) unit, which is adjacent to the outer coil (910, 1010, 1110) unit, and a direction of a magnetic field generated by the current flowing in the outer coil (910, 1010, 1110) unit and a direction of a magnetic field generated by the current flowing in the inner coil (920, 1020, 1120) unit are identical in a first region between the outer coil (910, 1010, 1110) unit and the inner coil (920, 1020, 1120) unit, which is adjacent to the outer coil (910, 1010, 1110) unit, a connection unit (940, 1030) is provided for interconnecting the outer coil (910, 1010, 1110) unit and the inner coil (920, 1020, 1120) unit, and the outer coil (910, 1010, 1110) unit and the inner coil (920, 1020, 1120) unit are connected to the power conversion unit via a matching circuit, which is configured to match impedance between the power conversion unit and the power transmission unit, the outer coil (910, 1010, 1110) unit and the inner coil (920, 1020, 1120) unit, which is adjacent to the outer coil (910, 1010, 1110) unit, are spaced apart from each other by a first distance, and the first distance is determined based on a magnitude of current flowing in the power transmission unit.