Auxiliary frame for building decoration engineering

The auxiliary frame for the building decoration engineering comprises a supporting cylinder, a through hole is formed in the supporting cylinder in the axial direction, a supporting rod is installed in the through hole in an inserted mode, the end, away from the supporting cylinder, of the supporting rod is detachably connected with a top plate, and two parallel fixing plates are fixedly installed on the first surface, away from the supporting rod, of the top plate. A rolling wheel is rotationally connected between the two fixing plates, an installation sleeve is further installed on the supporting rod and comprises a first semicircular ring detachably arranged on the supporting rod in a sleeving mode and a second semicircular ring arranged on the supporting rod in a sleeving mode in the direction opposite to the first semicircular ring, and baffles are fixedly connected to the first semicircular ring and the second semicircular ring respectively. During use, dust and sundries on a roof or a wall can be clean