Multi-rotor unmanned aerial vehicle

The invention discloses a multi-rotor unmanned aerial vehicle which comprises a vehicle body, a power supply system, a cargo allocating standard box and a plurality of rotor systems, wherein the vehicle body is in an annular structure, and comprises a positioning device, a flight control device and a buckling device, wherein the buckling device is positioned in an inner ring of the vehicle body; the power supply system is suitable for being connected with the positioning device and the flight control device to supply power to the positioning device and the flight control device; the cargo allocating standard box is used for internally limiting a space for accommodating cargoes, and is detachably arranged on the buckling device; each rotor system is fixed on the peripheral wall of the vehicle body through a rack, each rotor system comprises a rotor and a motor used for driving the rotor to rotate, and the motor is connected with the flight control device. The multi-rotor unmanned aerial vehicle disclosed by the invention has relatively high stability, safety and controllability, and can be used for transporting the cargoes with relatively high weight under a condition of ensuring that the whole appearance is relatively small.