The invention provides a crushing device for organic fertilizer raw materials, comprising a crushing chamber, a feeding cylinder, a motor one, a transmission shaft, a stirring rod, a crushing block, a lower millstone, a cylinder, an upper millstone, a motor two and an auger, and is characterized in that: The crushing chamber is set on the bracket, the lifting cylinder is set on the wall of the crushing chamber, and a discharge pipe is arranged on one end of the lifting cylinder, the motor is set on the crushing chamber, and the The drive shaft is set in the crushing chamber, the stirring rod is set on the connecting block, the lower grinding disc is set on the drive shaft, the motor 2 is set at one end of the lifting cylinder, and the auger is set at the lifting Inside the barrel. In the present invention, an upper millstone is arranged on the piston rod of the cylinder, and a lower millstone is arranged on the transmission shaft of the motor one, and the organic fertilizer raw materials to be pulverized are transmitted to the upper millstone and the lower millstone through the feed bin, the feeding pipe, and the feed port. It is convenient to crush organic fertilizer raw materials and reduce labor intensity.