Cargo-carrying unmanned aerial vehicle based on low-altitude flight

The invention relates to a cargo-carrying unmanned aerial vehicle based on low-altitude flight, a square block is inserted from the bottom between two locking blocks until a triangular block completely enters the space between the two locking blocks, and the two locking blocks are closed; the abutting rod is adjusted to the position above the corner of the cargo, and the unmanned aerial vehicle body lifts the cargo carrying part for air transportation; and the unmanned aerial vehicle body vertically descends, the abutting rod is jacked, the square block falls out, and binding of the cargo carrying part is relieved. The unmanned aerial vehicle has the beneficial effects that the square block with the triangular block is installed at the top of the bearing rope and is automatically locked after being inserted into the locking piece, after the unmanned aerial vehicle moves goods to the ground of the designated position, the square block is automatically unbound with the locking piece through the downward pressur