The utility model discloses a movable concrete case roof beam appearance quality overhauls device belongs to bridge construction equipment, including walking track, running gear, bearing system and restoration platform, two at least parallel arrangement on the walking track are equipped with on the walking track and connect through orbital bearing system that walks perpendicularly between the running gear along rail -engaging's running gear, and the bearing system below hangs the fixed prosthesis platform. The utility model relates to a simple and easy movable platform carries out the appearance quality maintenance to facing empty box girder baseplate and lateral wall, can further improve the whole quality of bridge and pleasing to the eye.