An interference wave suppressing apparatus includes a digital demultiplexing unit (7) configured to demultiplex a reception signal into demultiplexed signals having predetermined bandwidth, an interference-wave detecting unit (8) configured to determine, for each of the demultiplexed signals, based on a power value, whether an interference wave is present, an interference-wave suppressing unit (9) configured to change a signal value of the demultiplexed signal, in which the interference-wave detecting unit (8) determines that an interference wave is present, to a value equal to or smaller than a predetermined value, output the demultiplexed signal, and output the demultiplexed signal, in which the interference-wave detecting unit (8) determines that an interference wave is absent, and a digital multiplexing unit (13) configured to multiplex the signals output from the interference-wave suppressing unit (9).
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