The utility model discloses an unmanned aerial vehicle measuring device, which belongs to the technical field of measuring instruments and comprises an unmanned aerial vehicle, a connecting piece assembly and a measuring instrument hanging box. The unmanned aerial vehicle comprises an unmanned aerial vehicle frame, a plurality of vehicle arms are connected to the outer side of the unmanned aerialvehicle frame, blades are arranged at the free ends of the vehicle arms, and an undercarriage is arranged on the lower portion of the unmanned aerial vehicle frame. The measuring instrument hanging box is provided with a containing cavity, and a GPS measuring instrument is placed in the containing cavity. The GPS measuring instrument is in control signal connection with the application terminal; the connecting piece assembly comprises an upper connecting piece connected with the unmanned aerial vehicle frame and a lower connecting piece connected with the measuring instrument hanging box, andthe lower connecting piece is provided with a hasp with a buckling ring; the upper connecting piece is provided with a protruding block, and the buckling ring is connected with the protruding block ina buckled mode. The unmanned aerial vehicle is connected with the measuring instrument hanging box through the connecting piece assembly. The device is low in hardware cost, simple in structure and high in measurement efficiency, and can be used for rugged mountains.