The invention discloses a plow discharger. The plow discharger comprises a gantry, a big connecting rod, a round connecting rod, a lift cylinder seat, a lift cylinder, a long connecting rod, a pin shaft, a hoisting rod, a carrier roller frame, lower brackets, short connecting rods, rotating cylinder seats, rotating cylinders, colters, a left colter plate, a right colter plate and an adjustable carrier roller frame, wherein the carrier roller frame is connected to the gantry through the long connecting rod, the round connecting rod, the big connecting rod, the pin shaft and the hoisting rod, the carrier roller frame is connected to the lower brackets through the short connecting rods, the lift cylinder seat is in threaded connection with the gantry, the rotating cylinder seats are in welded connection with the colters, the left colter plate and the right colter plate are connected with the colters through long pins, and the adjustable carrier roller frame is in threaded connection with the lower brackets. The plow discharger provided by the invention can effectively discharge under various execrable conditions, and can ensure discharging of all on-site stock bins in virtue of the changeable colters, so that the all stock bins do not need other discharge manners, and the discharge direction of materials on a line belt can be changed by changing the direction of the colters.