The invention provides a cleaning device for a wiper cover plate, and relates to the technical field of automobile accessories. The cleaning device for the wiper cover plate comprises a wiper groove,a first wiper base, a second wiper base and drainage holes, wherein the first wiper base and the second wiper base are arranged on the inner wall of the back side of the wiper groove at intervals. Thecleaning device for the wiper cover plate can realize the automatic cleaning operation of the wiper groove through the cooperation of a main brush head, a slide way, a motor, a screw rod, a slide rodand an auxiliary brush head, and cleaning of the wiper groove by personnel is facilitated; the problem that cleaning dead angles in the wiper groove is difficult to treat due to the face that an existing wiper base is installed in the wiper groove, is solved, and the problem that in rainy days, ponding is always in the wiper groove due to the special structure of the wiper groove is solved; the difficulty of personnel cleaning is reduced, the cleaning efficiency of an automobile is improved, the service life of the automobile is prolonged, and the possibilities of electric leakage and short circuit of the wiper are reduced.