The utility model relates to the technical field of purification equipment, and particularly discloses an ecological floating
bed type
water body purification device which comprises a square plate, a hole is formed in the square plate and is fixedly connected with a one-way
barrel in a communicating manner; the emergent aquatic plants are planted in the one-way barrels, then the root systems of the emergent aquatic plants penetrate through the bottom face holes to make direct contact with the
water body to purify the
water body, then the connecting shafts penetrate through the semi-cylindrical pipes to complete movable connection, then the emergent aquatic plants are placed in the water body, and when shaking along with water
waves, the one-way barrels extrude one another to be limited; the one-way
barrel is arranged, so that the left-right shaking of the one-way
barrel is limited, emergent aquatic plants planted in the one-way barrel can reduce loss of root systems caused by shaking, meanwhile, the freedom degree of the one-way barrel in one direction is limited,
waves can be resisted, and water plants can purify COD,
nitrogen and
phosphorus in water in a relatively stable
water environment; the problems that an existing ecological
floating island cannot buffer emergent aquatic plants to reduce shaking, and multiple combined fixing
modes cannot be achieved are solved.