Mixed-cell-height　circuits　have　become　popular　in　advanced　technologies　for　better　power,　area,　routability,　and　performance　trade-offs.　With　the　technology　and　region　constraints　imposed　by　modern　circuit　designs,　the　mixed-cell-height　legalization　problem　has　become　more　challenging.　In　this　paper,　we　present　an　effective　and　efficient　legalization　algorithm　for　mixed-cell-height　circuit　designs　with　technology　and　region　constraints.　We　first　present　a　fence　region　handling　technique　to　unify　the　fence　regions　and　the　default　ones.　To　obtain　a　desired　cell　assignment,　we　then　propose　a　movement-aware　cell　reassignment　method　by　iteratively　reassigning　cells　in　locally　dense　areas　to　their　desired　rows.　After　cell　reassignment,　a　technology-aware　legalization　is　presented　to　remove　cell　overlaps　while　satisfying　the　technology　constraints.　Finally,　we　propose　a　technology-aware　refinement　to　further　reduce　the　average　and　maximum　cell　movements　without　increasing　the　technology　constraints　violations.　Compared　with　the　champion　of　the　2017　ICCAD　CAD　Contest　and　the　state-of-the-art　work,　experimental　results　show　that　our　algorithm　achieves　the　best　average　and　maximum　cell　movements　and　significantly　fewer　technology　constraint　violations,　in　a　comparable　runtime.　©　2018　ACM.