Using the attapulgite from the certain place,Jiangsu province,ultra-fine attapulgite powder with the size below 1?m and even size distribution was prepared by stirred mill under the dry environment.The influences of the factors,such as grinding time,rotating rate of stirrer,the ratio of grinding media and material,type and size of grinding media,and grinding aids,on on the pulverizing effect of stirred mill were investigated systematically by condition experiments,and the optimum grinding conditions for preparing ultra-fine attapulgite powder were determined.The results of study provided the theoretical bases for the determination of suitable technologic parameters in practical production.