Self-dedusting millstone

The utility model relates to the field of grinding devices, in particular to a self-dedusting grinding disc. The self-dedusting millstone comprises a millstone body, grinding blocks are evenly distributed on the millstone body close to the outer edge, a millstone hole is formed in the center of the millstone body, and air guide holes are formed between the millstone hole and the grinding blocks. And the grinding blocks are obliquely arranged along the rotating direction of the disc body. And the air guide holes are holes which obliquely penetrate through the disc body. The inclined direction of the air guide holes is the rotating direction along the disc body, and the inclined direction of the air guide holes faces the gap between the two grinding blocks. By means of the air guide holes, when the grinding disc rotates for grinding or cutting, air can penetrate from the rear portion of the disc body to the front portion through the air guide holes to blow and sweep chippings and dust accumulated in the front p