PURPOSE: To polish the roller surface uniformly and smoothly with a simple operation by storing a polishing unit and providing a locking part which locks the cable like body for tracting a fixed frame body so that the polishing face of the polishing material is exposed from the lower end.

CONSTITUTION: A roller polishing device 1 is tracted by using a cable like body 5 locked to the locking part 4 which is provided on the frame body 2 of a polishing unit 3 slowly in the rotary direction of the roller 20 to be subjected to surface polishing, e.g., the reverse direction to the left rotation, i.e., the right direction. That is, the whole surface of the roller 20 is polished by the rotation of the roller 20 while the polishing face of the abrasive 12 of the polishing unit 3 is passed through the roller 20.