The utility model relates to a receiving device of a dock, which belongs to the technical field of loading and unloading supporting facilities and comprises an underframe fixed on a fence threshold of the dock and a bracket fixed on the underframe, wherein the section of the bracket is triangular; a receiving plate one end of which extends out of the fence threshold of the dock is placed on one lateral surface of a triangular hypothenuse in an overlapping mode; and the distance of the top end of the receiving plate extending out of the fence threshold of the dock is greater than the width of a fender on the outer edge of the fence threshold of the dock. Since various components of the receiving device are all rigid plates and fixed on the fence threshold of the dock, compared with the prior canvas, the receiving device can better resist the erosion of solarization and drenching and blowing off of gale, is more firm and durable and not easy to damage, and thereby materials falling from the clearance of a grab bucket can be ensured to be effectively recovered for a long term.