Medicinal material grinding machine capable of avoiding weakening of material grinding effect

The invention relates to the technical field of traditional Chinese medicine processing equipment, and discloses a medicinal material grinding machine capable of avoiding weakening of the material grinding effect. The medicinal material grinding machine comprises a box body, upper sliding grooves are formed in the upper portion of the inner wall of the box body, and a magnetic rotating ring is slidably mounted in the box body and is made of a magnetic material; and sliding blocks are fixedly installed at the two ends of the outer side of the magnetic rotating ring, the sliding blocks are in sliding connection with the upper sliding grooves, an upper grinding disc is movably installed on the inner side of the magnetic rotating ring, and the upper grinding disc and the magnetic rotating ring move relatively. Through arrangement of rotating magnetic parts and the magnetic rotating ring, heteropole attraction of the rotating magnetic parts and the magnetic rotating ring is utilized, and thus when the machine works, a lower grinding disc can be gradually close to the upper grinding disc along with gradual reduction of the volume of a material between the upper grinding disc and the lower grinding disc, so that when the machine works, the phenomenon that due to the reduction of the volume of the material, the force applied by the grinding discs to the materials is reduced can be avoided, and the weakening of the grinding effect of the materials is avoided.