Soil impurity removal device

The utility model discloses a soil impurity removal device, which relates to the technical field of soil impurity removal and comprises an impurity removal box, a cavity is arranged in the impurity removal box, the top and one side of the impurity removal box are respectively provided with a feed pipe and a discharge port, and the front side and the rear side of the impurity removal box are respectively provided with a receiving box and a fan. Sliding openings are formed in the front side of the impurity removing box and the rear side of the material receiving box correspondingly, an inclined plate and a conveying belt are arranged in the cavity, a smashing assembly is arranged in the inclined plate, a secondary impurity removing mechanism is arranged in the cavity, and the secondary impurity removing mechanism comprises a sliding plate and a driving assembly; the sliding plate is arranged in the cavity in a sliding mode, a filter screen is arranged in the sliding plate, the sliding plate is connected with th