In　this　poster,　we　propose　a　multi-DOF　(degree　of　freedom)　3D　printing　system　with　visual　surveillance　assistance.　Different　from　common　3D　printers　with　only　three　translational　axes,　our　printer　is　equipped　with　two　additional　rotational　axes,　and　a　visual　surveillance　module　which　helps　to　enhance　the　printing　precision　during　the　rotation.　The　input　model　is　first　segmented　such　that　each　part　can　be　printed　in　a　direction　with　less　supporting　material.　We　demonstrate　that　the　proposed　system　could　save　most　of　the　supporting　materials　compared　to　existing　works.