The invention discloses a sticky coal blending combustion bi-directional feeding device and belongs to the field of sticky coal blending combustion feeding devices. The sticky coal blending combustion bi-directional feeding device comprises a coal bunker, two discharging ports are symmetrically formed along the axis of a bottom plate of the coal bunker, the lower portion of each discharge port is connected with a coal dropping pipe, and the bottom ends of the two coal dropping pipes communicate with each other. A splitter plate is arranged above the two discharging ports, and the two ends of the splitter plate are fixed to the side walls of the coal bunker. The coal bunker is internally provided with a rotary cutting body, the rotary cutting body comprises a base body and three cutters symmetrically arranged along the center of the base body, a power system is arranged below the center of the bottom plate of the coal bunker, and the power system is connected to the center of the base body. Materials in the coal bunker are alternately pushed by the rotary cutting body into the coal dropping pipes, the space for original materials is supplemented with materials on the upper portion under the action of gravity, first come first go of the materials is achieved, linking control is matched, a feeding device channel is kept smooth all the time, the materials come while the other materials go, and quantitative blocking preventing is achieved.