The invention relates to a cleaning device, in particular to an efficient dredger propeller cleaning device, and aims to solve the technical problem of providing the efficient dredger propeller cleaning device which is time-saving and labor-saving during cleaning, better in cleaning effect and longer in service life. The efficient dredger propeller cleaning device comprises a first oscillating rod, a bent blade, a roller brush, a rotary shaft, a first bearing pedestal, a second bearing pedestal, a square rod, a motor, a wheel gear, a gear rack, a stay cord, a tapping block, a connecting rod, a sliding block, a sliding rail, an air cylinder, a box, a hard pipe, an electronic control valve, an electric push rod, a fulcrum bar and a second oscillating rod, wherein the electric push rod and the fulcrum bar are arranged at the bottom of the interior of the box; and the electric push rod is positioned on the left side of the fulcrum bar. The efficient dredger propeller cleaning device realizes the effects that cleaning is time-saving and labor-saving, the cleaning effect is better and the service life is longer, can clean up a propeller, and is simple in structure and low in cost.