Abstract: A digital radio system based on a mobile terminal according to an embodiment of the present disclosure includes: an analog radio transceiver configured to, while changing a used frequency band at any time, communicate with another analog radio transceiver through the used frequency band, and the mobile terminal configured to allow connection of the analog radio transceiver, and then decode a signal received through the analog radio transceiver and reconstruct and reproduce at least one of audio data, image data, and metadata, or encode at least one audio data, image data, and metadata generated by a user and wirelessly transmit the encoded data through the analog radio transceiver.