The invention relates to a radio technology, in particular to an aircraft high-frequency communication system. The aircraft high-frequency communication system comprises a radio communication panel, an HF antenna coupler, a remote control electronic component, a flight data collecting assembly and a selection calling decoder which are all in signal connection with an HF transceiver; and the HF antenna coupler is connected with an HF antenna, the remote control electronic component is connected with a controlled component, and the controlled component comprises an alarm. According to the aircraft high-frequency communication system, in the flight process of an aircraft, when flight data deviate, a signal is transmitted to the remote control electronic component, the alarm of the controlledcomponent alarms, and thus the effect of instant and automatic alarming is achieved.