Provided is a high frequency communication apparatus for vehicle. The high frequency communication apparatus includes a single cable; a communication module connected to an end of the single cable and configured to transmit a radio frequency (RF) signal and a transmit (TX) serial communication signal, the communication module including a TX serial communication modulation circuit and a receive (RX) serial communication demodulation circuit; and an antenna module connected to the other end of the single cable and configured to receive and branch the RF signal and the TX serial communication signal, the antenna module including a front end module, a TX serial communication demodulation circuit, a controller configured to receive a demodulated TX serial communication signal to control the front end module and output an RX serial communication signal, and an RX serial communication modulation circuit.