The invention provides a riverbed plastic garbage treatment device. The riverbed plastic garbage treatment device comprises an arc-shaped floating
barrel, a
sedimentation capturing mechanism used for capturing garbage at the bottom of a riverbed and a floating dragging mechanism used for dragging the plastic garbage, wherein the
sedimentation capturing mechanism is arranged below the arc-shaped floating
barrel, and the floating dragging mechanism is arranged on one side of the arc-shaped floating
barrel. The invention relates to the field of garbage treatment. According to the riverbed plastic garbage treatment device, a special structure which can automatically salvage the riverbed plastic garbage and avoid the
plastic bag from being separated by means of the action of
water flow waves and
wind power is designed according to the problems that the salvage resistance is large in an existing riverbed
surface plastic bag garbage salvage process, and the
plastic bag is easy to tear and separate, and thus, the problems that the
plastic bag garbage on a common riverbed contains
silt, the salvage resistance is large, the plastic bag is easy to tear in the salvage process, the salvage difficulty is further increased, and the
ecological environment is influenced by the plastic bag garbage on the riverbed are effectively solved.