The utility model discloses a loosening device. The loosening device comprises a coal bunker loosening machine, a power mechanism, an executing mechanism and a knocking piece. Wherein the coal bunkerloosening machine is arranged in the raw coal bunker and used for cutting off bonding between coal and the inner wall of the raw coal bunker and between the coal and the inner wall of the conical coalflow channel. The power mechanism is used for driving the actuating mechanism to work. And the knocking piece is used for knocking the outer wall of the linear coal flow channel under the driving ofthe execution mechanism. The utility model provides a loosening device. Power mechanism, Actuating mechanism, When the linear coal flow channel is blocked, the knocking piece knocks the coal flow channel. When the coal feeder is used, only the power mechanism needs to be started, the power mechanism is used for driving the executing mechanism to work, the executing mechanism drives the knocking piece to knock the outer wall of the linear coal flow channel, then coal in the linear coal flow channel is vibrated to fall onto the coal feeder, the automation degree is improved, the working efficiency is improved, and the labor intensity of workers is reduced.