The invention relates to the technical field of water surface garbage salvage, and discloses a float cleaning child-mother ship for a narrow
water area, the float cleaning child-mother ship comprises a mother ship and a child ship, the child ship comprises a ship body, a support is arranged in the ship body, the inner area of the ship body is divided into a
storage area and a salvage area by the support, and the side, away from the support, of the salvage area is open and provided with a traction
assembly and a salvage
assembly; a traveling
assembly is arranged at the bottom of the ship body, the traction assembly comprises two traction units and a driving unit, the traction units are symmetrically arranged about the center line of the ship body, each
traction unit comprises a
branch support body hinged to the corresponding support, and a hinged shaft formed at the hinged position of the
branch support bodies is vertically arranged. A synchronous belt set is installed on the
branch support body, a driving belt wheel of the synchronous belt set is coaxial with the hinge shaft, a plurality of blade plates are arranged on the outer surface of a synchronous belt of the synchronous belt set in the extending direction in an array mode, and the driving unit is used for driving the synchronous belt set to operate and driving the hinge shaft to rotate.