Natural hazard broadcasting early-warning method and early-warning device

The invention discloses a natural hazard broadcasting early-warning method and early-warning device. The method comprises the steps of collecting and receiving early-warning information of external communication devices; converting the early-warning information into voice broadcasting signals and driving a loudspeaker to broadcast and output; detecting broadcasting conditions of voice broadcasting signals output by the loudspeaker, and recording; judging whether the broadcasting is finished or not, and conducting statistics on detected broadcasting conditions of voice broadcasting signals if the broadcasting is finished; and judging whether the broadcasting of the early-warning information is successful or not, and feeding facts whether the broadcasting of the voice broadcasting signals is successful or not back to communication devices which transmit the early-warning information if communication devices which transmit the early-warning information are management devices. According to the natural hazard broa