The invention relates to a software radio demonstration platform of an aircraft radio station. The software radio demonstration platform of the aircraft radio station comprises a DSP module, an FPGA module, an ARM module, an A/D/A module, a power source module and a clock module, the A/D/A module is connected with the FPGA module to complete signal analog-to-digital conversion and digital-to-analog conversion, the FPGA module completes functions of DDC down-conversion, DUC up-conversion, direct spreading and despreading, the DSP module is connected with the FPGA module to receive transmitted signals and complete functions of synchronization, modulation, demodulation and frequency modulation control, and the ARM module is connected with the FPGA module and the DSP module to complete functions of program loading and mode control. According to the software radio demonstration platform of the aircraft radio station, a full-digital system is achieved, the system framework is reasonable, thestructure is concise, the framework of ARM+DSP+FPGA+RF is adopted as a whole, and wireless communication modes of any typical cases can be achieved; meanwhile, the interface is friendly and aesthetic, and human-computer interaction is high.