To　reduce　lead-time　of　a　product　in　the　project　manufacturing　environment　while　improving　on　time　completion　rate,　a　new　approach　based　on　CCPM　to　setting　lead-time　is　developed.　After　analyzing　the　features　of　project　manufacturing,　it　is　concluded　that　current　methods　of　setting　lead-time　usually　don＇t　perform　well　for　project　manufacturing.　For　the　project　manufacturing　has　the　same　features　as　a　project,　incorporated　CCPM,　a　four　step　approach　which　involves　defining　a　project,　identifying　critical　chain,　setting　buffers　and　constructing　the　project　plan,　to　set　lead-time　is　proposed.　A　simulation　experiment　indicates　that　the　proposed　approach　outperforms　CPM.　©2009　IEEE.