The invention discloses a real-time unmanned aerial vehicle monitoring system and belongs to the related field of sensors. The method comprises the steps of effectively tracking the flight height andthe advancing track of the unmanned aerial vehicle; carrying out effective information transmission on a non-signal key zone by deploying an LORA base station, carrying out effective supervision and alarm on the flight mode of the unmanned aerial vehicle, and carrying out effective analysis and data mining, an unmanned aerial vehicle flight height data measurement algorithm and a trajectory correction algorithm on flight data of the unmanned aerial vehicle.