Dirt suction device for swimming pool

The utility model relates to a dirt suction device for a swimming pool. The utility model comprises a cover-shaped casing, wherein, a lateral face structure of which is in a trapezoidal shape, and a rolling wheel is installed on each end corner of the casing. A cleaning brush is fixedly installed at a top along the interior of the casing, and the central position of the top of the casing is provided with a liquid outlet, on which a drainage tube is fixedly installed. Compared with the prior art, a dirt accumulation cover is arranged, and the strip-shaped cleaning brush is fixedly installed in the dirt accumulation cover. The rolling wheels which can make the dirt suction device be moved are installed on the end corners of the dirt accumulation cover, and the upper part of the dirt accumulation cover is fixedly provided with a traction suspension ring. Thus the dirt suction device for the swimming pool has the advantages of simple and compact structure, easy manufacture, low cost and easy maintenance.