Soil crushing device

The utility model relates to the technical field of civil engineering, and provides a soil smashing device which comprises a smashing box, universal wheels are arranged at the bottom of the smashing box, push rods are arranged on the two sides of the upper portion of the smashing box, a feeding port is formed in the top of the smashing box, and a first motor is arranged at the position, located in the center of the upper portion of the smashing box, of one side adjacent to the feeding port. The output end of the first motor is connected with a crushing disc, and a plurality of first crushing rods are arranged on the periphery of the outer portion of the crushing disc. The smashing roller and the magnetic bar are arranged in the feeding port, soil can be smashed preliminarily through the smashing roller, iron materials in the smashed soil can be adsorbed to the magnetic bar and are prevented from falling into the smashing box to be mixed with the soil, the first material guide plate can filter the fine soil do