Disclosed is a soil pulverizer. The soil pulverizer comprises a base plate, a soil hoeing device, a first air cylinder device, a pulverization device, a conveyor belt device, a motor device and a second air cylinder device. Rolling wheels and a first locating rod are arranged on the base plate. A triangular block, a first inclined rod, a first transverse rod and other parts are arranged on the soil hoeing device. A first air cylinder, a first push rod, a first fixed block, a second support and a second fixed block are arranged on the first air cylinder device. A pulverization frame, a second rotating wheel, second pulverization teeth, a second inclined rod and other parts are arranged on the pulverization device. Conveying wheels, a second supporting rod, a conveyor belt, a third supporting rod, a fourth support, a fourth supporting rod and a circular wheel are arranged on the conveyor belt device. A first supporting column, a third inclined rod, a motor, a fifth support, a third rotating wheel, third pulverization teeth and a rotating shaft are arranged on the motor device. A second air cylinder, a second push rod, a frame, supporting blocks and other parts are arranged on the second air cylinder device. According to the invention, soil can be sufficiently pulverized, the efficiency of crops for absorbing nutrients in the soil is improved, and the soil can be sufficiently utilized.