Sample preparation device for agricultural soil analysis

The utility model discloses a sample preparation device for agricultural soil analysis, and relates to the technical field of soil sample preparation devices, the sample preparation device comprises a base and a grinding plate, the top of the base is provided with a grinding basin, the top of the grinding basin is provided with a grinding cover, and the middle of the grinding cover is connected with a rotating shaft in a penetrating manner. The sample preparation device for agricultural soil analysis has the beneficial effects that when the sample preparation device for agricultural soil analysis is used, the grinding plate is arranged on the grinding cover through the rotating shaft, and the crank is arranged on the rotating shaft, so that only the crank needs to be rotated to drive the grinding plate to rotate through the connecting shaft during grinding operation; the grinding plate can grind and crush soil in the grinding basin, and meanwhile, an acting force which is in the axial direction and faces the