A wireless power transmitter (100, 200, 300) comprising: a substrate (110, 210, 310); a first blocking unit (123, 223, 323) disposed over the substrate (110, 210, 310) and formed of a metallic material; a second blocking unit (127, 227, 327) over the first blocking unit (123, 223, 323); and a wireless transmission unit (140, 240, 340) mounted on at least one of the first blocking unit (123, 223, 323) and the second blocking unit (127, 227, 327), wherein the wireless transmission unit (140, 240, 340) comprises: a first wireless transmission unit (141, 241, 341) including a first transmission coil; and a second wireless transmission unit (151, 251, 351) including a second transmission coil, a control unit to control such that AC power is output to a transmission coil (145, 155) of one of the wireless transmission units according to a power transmission scheme; characterized in that the first blocking unit (123, 223, 323) has a concave portion in a central area and the first transmission coil is disposed within the concaved portion of the first blocking unit (123, 223, 323), the second blocking unit (127, 227, 327) is spaced apart from the first transmission coil; and the first blocking unit (123, 223, 323) is coupled to an edge region of the second blocking unit (127, 227, 327) to support the second blocking unit (127, 227, 327) a substrate (110, 210, 310); a first blocking unit (123, 223, 323) disposed over the substrate (110, 210, 310) and formed of a metallic material; a second blocking unit (127, 227, 327) over the first blocking unit (123, 223, 323); and a wireless transmission unit (140, 240, 340) mounted on at least one of the first blocking unit (123, 223, 323) and the second blocking unit (127, 227, 327), wherein the wireless transmission unit (140, 240, 340) comprises: a first wireless transmission unit (141, 241, 341) including a first transmission coil; and a second wireless transmission unit (151, 251, 351) including a second transmission coil, a control unit to control such that AC power is output to a transmission coil (145, 155) of one of the wireless transmission units according to a power transmission scheme; characterized in that the first blocking unit (123, 223, 323) has a concave portion in a central area and the first transmission coil is disposed within the concaved portion of the first blocking unit (123, 223, 323), the second blocking unit (127, 227, 327) is spaced apart from the first transmission coil; and the first blocking unit (123, 223, 323) is coupled to an edge region of the second blocking unit (127, 227, 327) to support the second blocking unit (127, 227, 327) a first wireless transmission unit (141, 241, 341) including a first transmission coil; and a second wireless transmission unit (151, 251, 351) including a second transmission coil, a control unit to control such that AC power is output to a transmission coil (145, 155) of one of the wireless transmission units according to a power transmission scheme; characterized in that the first blocking unit (123, 223, 323) has a concave portion in a central area and the first transmission coil is disposed within the concaved portion of the first blocking unit (123, 223, 323), the second blocking unit (127, 227, 327) is spaced apart from the first transmission coil; and the first blocking unit (123, 223, 323) is coupled to an edge region of the second blocking unit (127, 227, 327) to support the second blocking unit (127, 227, 327)