The utility model relates to a high -efficient stable materials grinding system of raising, including taper casing, ejection of compact casing, apron, rotation axis, motor, abrasive sheet, awl fill, material brush, sa kelong dust remover, fan and air seal machinery gather materials, the utility model discloses can not cause material over -grinding to smash, avoid over grind unnecessary power consumption among the process of lapping, on the other hand, the large granule material can be garrulous by from big to small's abrasive powder step by step, is unlikely to to make the material one -offlysmashed meticulously by machinery is broken at random, avoids the problem that causes thing materials grinding low quality, efficiency of grinding not good. The utility model has the advantages of thegrinding efficiency is high, and efficiency of grinding is good, and attrition treatment power consumption is low.