An IQ imbalance correction method, which is executed in a wireless communication device including a quadrature modulation/demodulation function (QMOD, QDEM) in an analog circuit area (TR, REC), comprising: transmitting radio frequency, RF, training signals by pairing RF training signals symmetric with respect to a center frequency (Fc) on a frequency axis; converting, in a quadrature demodulator (QDEM) in the analog circuit area, the RF training signals into intermediate frequency, IF, training signals; performing analog/digital conversion on the IF training signals by an analog/digital converter and then processing the IF training signals, respectively, in a digital circuit area to generate baseband, BB, training signals; calculating correction coefficients for correcting IQ imbalance when demodulation is performed on the BB training signals, respectively, in the digital circuit area; and correcting IQ imbalance of a transmission part, which includes a quadrature modulation function (QMOD), with use of a correction coefficient; characterised in that: said transmitting step comprises transmitting a plurality of pairs of said RF training signals in one or more separate transmissions; said performing step comprises performing quadrature demodulation on the IF training signals in the digital circuit area to generate the BB training signals; said converting step comprises setting a reception local frequency of the quadrature demodulator (QDEM) in the analog circuit area to change to a frequency that is suitable to put both of a pair of said RF training signals within a reception bandwidth of a reception-side low pass filter upon receiving a pair of said RF training signals having a combined band contained within the reception bandwidth, and suitable to put one of a pair of said RF training signals within the reception bandwidth of the reception-side low pass filter upon receiving a pair of said RF training signals having a combined band not contained within the reception bandwidth; and said correcting step uses a correction coefficient for an entire frequency range. transmitting radio frequency, RF, training signals by pairing RF training signals symmetric with respect to a center frequency (Fc) on a frequency axis; converting, in a quadrature demodulator (QDEM) in the analog circuit area, the RF training signals into intermediate frequency, IF, training signals; performing analog/digital conversion on the IF training signals by an analog/digital converter and then processing the IF training signals, respectively, in a digital circuit area to generate baseband, BB, training signals; calculating correction coefficients for correcting IQ imbalance when demodulation is performed on the BB training signals, respectively, in the digital circuit area; and correcting IQ imbalance of a transmission part, which includes a quadrature modulation function (QMOD), with use of a correction coefficient; characterised in that: said transmitting step comprises transmitting a plurality of pairs of said RF training signals in one or more separate transmissions; said performing step comprises performing quadrature demodulation on the IF training signals in the digital circuit area to generate the BB training signals; said converting step comprises setting a reception local frequency of the quadrature demodulator (QDEM) in the analog circuit area to change to a frequency that is suitable to put both of a pair of said RF training signals within a reception bandwidth of a reception-side low pass filter upon receiving a pair of said RF training signals having a combined band contained within the reception bandwidth, and suitable to put one of a pair of said RF training signals within the reception bandwidth of the reception-side low pass filter upon receiving a pair of said RF training signals having a combined band not contained within the reception bandwidth; and said correcting step uses a correction coefficient for an entire frequency range. said transmitting step comprises transmitting a plurality of pairs of said RF training signals in one or more separate transmissions; said performing step comprises performing quadrature demodulation on the IF training signals in the digital circuit area to generate the BB training signals; said converting step comprises setting a reception local frequency of the quadrature demodulator (QDEM) in the analog circuit area to change to a frequency that is suitable to put both of a pair of said RF training signals within a reception bandwidth of a reception-side low pass filter upon receiving a pair of said RF training signals having a combined band contained within the reception bandwidth, and suitable to put one of a pair of said RF training signals within the reception bandwidth of the reception-side low pass filter upon receiving a pair of said RF training signals having a combined band not contained within the reception bandwidth; and said correcting step uses a correction coefficient for an entire frequency range.