Abstract: The present invention provides a variable rate precision fertilizer applicator, comprising a connecting plate, a fertilizer bin and a fertilization mechanism. A plurality of connecting belts are fixed on the connecting plate; the connecting plate is connected with a fertilization unmanned aerial vehicle (UAV) through the connecting belts; a connecting column is fixed on a bottom surface of the connecting plate, and the connecting plate is fixedly connected with the fertilizer bin through the connecting column; a storage bin is separated into a solid bin and a liquid bin through a partition plate; a release bin is arranged on one side of the storage bin; the spiral feeding cylinder is installed in the solid bin; a liquid pump is installed in the liquid bin; the discharge port is installed in the release bin; the fertilization mechanism is installed at the bottom side of the fertilizer bin.