The utility model discloses a discharger for the round silo, which is composed of static parts and rotary parts. The static parts comprise a bracket and a round silo that is arranged on the bracket; the rotary parts are arranged on the bracket; the bottom of the round silo is provided with a driving gearwheel; the rotary parts are provided with a driven gearwheel that is in mesh with the driving gearwheel; a protecting shell is of cylinder-shaped structure whose top is sealed, and is nested outside the rotary parts; the protecting shell is provided with a round hole that is used to stretch a discharging screw to the round silo; the central position of the bottom of the round silo is provided with a circuit closer; the discharging screw is fixed above the bracket of the discharging screw by a screw hoop frame; a motor is fixed beneath the bracket of the discharging screw by bolt components; the motor is provided with the driving gearwheel; the discharging screw is provided with the driven gearwheel; the driving gearwheel is connected with the driven gearwheel by means of a transmission chain; and a discharging outlet is arranged beneath the protecting shell. With convenient using and reliable performance, the utility model has the advantages that the utility model can alarm in case of accidents, the discharging speed can be adjusted, and the utility model effectively prevents from being blocked.