Abstract: An optical disc mounting mechanism, comprising, a front sweeper (32) for catching an optical disc from a front slot (12) and bringing said disc into a drive module followed by pushing an optical disc out of the front slot; a rear sweeper (34) for pushing the disc out of a rear slot (16) or catching the disc from the rear slot; one or more front sensors for sensing the insertion of an optical disc; a center sensor for sensing the present of the disc in a drive module; one or more rear sensors for sensing the moving direction of the disc; a drive head for reading or writing the disc; a controlling mechanism for mounting or unmounting an optical disc to said drive head (92). The said disc mounting mechanism has good adaptability and simple structures.