To increase work efficiency, simplify work, and increase the brightness of a coated surface by mechanizing polishing operation/coating operation for the coated surface applied to a vehicle body by operating a polisher at a specified pressure and a specified speed.

In this automatic side face polishing machine, a vertical movement part 2 is installed on the upper part of a side face movement part 1, a horizontal movement part 3 is installed on the vertical movement part, and an elastic body 5 for installing the electric polisher is installed at the end of the horizontal movement part. Also, a drive wheel 12 is installed on the side face part of the side face movement part 1, and universal wheels 13 and 14 are installed on the opposite side face portions. In addition, a pressure regulating part 4 for applying an energizing force to the horizontal movement part is installed in the electric polisher installed at the end of the horizontal movement part.