The utility model discloses a police unmanned aerial vehicle with positioning and alarming functions. The device comprises an unmanned aerial vehicle body and a remote control device body, four connecting rods are fixedly mounted on the outer wall of one side of the unmanned aerial vehicle body; the four connecting rods are located at the four corners of the unmanned aerial vehicle body correspondingly. An electric motor is fixedly installed at one end of the connecting rod, a propeller is fixedly installed at one end of an output shaft of the electric motor, two L-shaped rods are fixed to theouter walls of the two sides of the unmanned aerial vehicle body through bolts, a connecting cross rod is fixedly installed on the outer walls of the bottoms of the L-shaped rods, and an alarm is fixedly installed in the unmanned aerial vehicle body. According to the unmanned aerial vehicle, the position of the unmanned aerial vehicle can be well positioned, flight loss of the unmanned aerial vehicle under the condition of insufficient endurance is prevented, the GPS positioner and the GPS receiver can be well displayed on the electronic display screen on the basis of satellite positioning, and a user can better distinguish the flight direction of the unmanned aerial vehicle through the display screen.