The utility model relates to a machinery processing technology field especially relates to a polishing descaling machine is played to literary composition. The utility model provides a polishing descaling machine is played to literary composition includes actuating mechanism, mounting bracket, base and locates perpendicularly the stand of base, when clearance polishing the accessible polishing clearance subassembly of locating the base upside play the literary composition and polish the clearance, compare with traditional artifical polishing clearance mode, use mechanical equipment to play to the literary composition that to polish the clearance simple more, convenient, swift, labour saving and time saving more, the efficiency of polishing is higher, can satisfy the large batch demand in market. Using the cooperation of slide rail and slider in addition, only need aiming at the slide rail with the slider and insert and to accomplish the assembly, assemble convenient and fast more, the space that occupies is littleer, because the cooperation of slide rail and slider, can be according to the appropriate regulation of demand the height of clearance subassembly, single slide rail passes through the cooperation of slider and slide rail, can only do reciprocating, avoids polishing clearance subassembly the problem of off centering, horizontal tilt to appear.