Combined ceiling lamp structure

The utility model discloses a combined ceiling lamp structure which comprises an installation base, a hanging rod fixed to the installation base, a supporting disc arranged at the bottom of the hanging rod, a plurality of installation screw holes formed in the side face of the supporting disc, and hollow arc-shaped supporting arms with the same number as the installation screw holes. A transverse threaded protruding column is integrally formed at one end of the hollow arc-shaped supporting arm, a downward threaded connecting column is integrally formed at the other end of the hollow arc-shaped supporting arm, the transverse threaded protruding column is perpendicular to the extension line of the threaded connecting column, and the transverse threaded protruding column is fixed to the mounting screw hole in a threaded mode. The edge of the top face of the lamp is in threaded fixation with the threaded connection column. The LED lamp is reasonable in structural arrangement, the supporting disc, the hollow arc-s