Restoration device for marine sediment pollution

The utility model discloses a repairing device for marine sediment pollution. The repairing device comprises a ship body, a soil turning unit, a collecting unit and a shear wheel unit, the shear wheel unit, the soil turning unit and the collecting unit are sequentially installed on the ship body. In order to solve the problem that in the repairing process of an existing device, the device is extremely prone to being dragged by sundries such as sea grass on the seabed, and repairing is interrupted, the shearing wheel unit is arranged, the sundries on the seabed are trimmed, the device moves forwards more smoothly, operation of the soil turning unit and the collecting unit behind is facilitated, and the repairing efficiency is improved. Flexible strain of sea grass with various depths can be achieved by adjusting the height of the shear wheel rod, seabed sandy soil is turned up through the soil turning device, deposited small metal impurities can be conveniently lifted up, the collecting box is made of strong m