Disaster relief field communication system and working method

The invention discloses a disaster relief field communication system and a working method. The system comprises a first terminal which comprises an MCU module, a positioning module, a first wireless connection module and a key module, and the positioning module, the first wireless connection module and the key module are all electrically connected to the MCU module; the unmanned module comprises an unmanned aerial vehicle, the unmanned aerial vehicle is provided with a control unit, a communication module and a second wireless connection module, the unmanned aerial vehicle, the communication module and the second wireless connection module are all electrically connected with the control unit, and short-distance wireless connection between the control unit and the MCU module is achieved through the first wireless connection module and the second wireless connection module; and the second terminal is in long-distance communication connection with the control unit through the communication module. The technical