The utility model discloses a scrape board -like ultrasonic wave deslimer, comprising a water tank, the water tank upper end is fixed with leaves the upper cover that has central through -hole, upper cover downside all around is equipped with overflow arrangement, central authorities' through -hole internal fixation has the pan feeding pipe, the buffer board has been put to pan feeding pipe lower extreme, leave the discharge gate between buffer board and the pan feeding pipe, the water tank bottom is connected with scraper conveying device, scraper conveying device bottom is fixed with the ultrasonic wave board that shakes. The utility model discloses convenient to use, the effect is obvious, and will get into suspended solid in the ore pulp of water tank, mud and concentrate through the aqueous medium hierarchical, and suspended solid, mud flow out from scalable overflow weir, and the concentrate precipitates in the scraper conveying device of water tank bottom. Shake the board through the ultrasonic wave and use, improved the ore dressing precision. Scraper conveying device not only can be in time, all carry the bin outlet to the concentrate, can not cause the interference to the hierarchical process of ore pulp in the water tank in addition.