The invention discloses a rice seeding type unmanned aerial vehicle and a control system thereof. The rice seeding type unmanned aerial vehicle includes an unmanned aerial vehicle, a seed loading bucket, a seed arranging structure and a flow guiding structure from top to bottom in sequence; the seed loading bucket is fixedly mounted under the unmanned aerial vehicle, and the seed loading bucket comprises a trapezoidal-platform-shaped body which is wide at the top and narrow at the bottom, a seed inlet is formed in the top of the trapezoidal-platform-shaped body, and a first seed outlet is formed in the bottom of the trapezoidal-platform-shaped body; the seed arranging structure comprises a shell with an opening at the top end, a direct current motor and a roller; the flow guiding structurecomprises at least one row of seed flow guiding tube sets; and one row of seed flow guiding tube sets comprise a plurality of seed flow guiding tubes, the seed inlet ends of the multiple seed flow guiding tubes are gathered, and the seed outlet ends of the multiple seed flow guiding tubes are expanded in a radial fan shape. The trapezoidal-platform-shaped seed loading bucket, the seed arranging structure internally provided with the roller and the flow guiding structure in the radial fan shape can control the speed and the seeding amount of the seed arranging, equally divide the seeding amount of each seed outlet, and improve the direct seeding accuracy and stability of the unmanned aerial vehicle.