Wall surface polishing device and building decoration equipment

The utility model relates to the technical field of building decoration equipment, in particular to a wall surface polishing device and building decoration equipment, which comprise a bottom plate and a movable column, universal wheels and a fixed box are arranged on the bottom plate, a worm gear is arranged on a connecting shaft, and the worm gear is meshed with the worm to realize the connection of a gear and the worm; a supporting seat and a gear ring are arranged on the movable column, a grinding disc is arranged on the first motor, and the gear ring is connected with a gear; a second motor is started to drive a worm to rotate, the worm drives a worm gear to enable a connecting shaft to rotate to drive a gear to rotate, the gear and a gear ring are in meshed connection to enable a movable column to move upwards, the movable column slides on a fixed column while moving upwards, the movable column drives a supporting base to move upwards, and then a grinding disc on a first motor is driven to move upwards;