The paper makes exploration to the using situation of liner and grinding ball in ball mill popularly used in domestic phosphorous mine, describes some problems which occurs in match using between liner and grinding ball, and puts forward improving method.[Descriptors] Phosphorous mine Ball mill Liner Grinding ball The paper makes exploration to the using situation of liner and grinding ball in ball mill popularly used in domestic phosphorous mine, describes some problems which occurs in match using between liner and grinding ball, and puts forward improving method. [Descriptors] Phosphorous mine Ball mill Liner Grinding ball