The present invention provides an unmanned aerial vehicle monitoring system. The system comprises real-time monitoring software, unmanned aerial vehicle cloud server, a safety controller and a satellite communication positioning system. Data transmission between the satellite communication positioning system and the safety controller is realized through Beidou short message, data transmission between the satellite communication positioning system and the unmanned aerial vehicle cloud server is realized through the Beidou short message, and all the electronic devices of the safety controller are closed in an aluminum metal waterproof housing. The unmanned aerial vehicle monitoring system can perform track of takeoff authorization and real-time coordinates of an unmanned aerial vehicle, perform constraint forced landing of a no-fly area, perform emergency braking forced landing, perform intrusion detection of a remote system and perform real-time monitoring of GPS signals, and a Beidou signal interference unit/simulator, the airplane faults can early warning, and therefore the unmanned aerial vehicle monitoring system can realize safety monitoring of a multi-rotor unmanned aerial vehicle; and moreover, the usage is safe, and the monitoring is reliable, etc.