Purpose　The　purpose　of　this　paper　is　to　improve　the　performance　and　quality　of　Ti-6Al-4V　fabricated　by　laser　powder　bed　fusion.　Design/methodology/approach　Single-track　experiments　were　conducted　during　the　fabrication　process　to　obtain　the　single　tracks　with　excellent　wettability　to　narrow　the　process　parameter　window.　The　effects　of　process　parameters　on　the　build　surface,　cross-section,　relative　density,　defects,　surface　roughness,　microstructure　and　mechanical　properties　of　the　parts　were　analyzed　through　multilayer　fabrication　experiments　and　surface　optimization　experiments.　Findings　The　point　distance　has　the　greatest　influence　on　the　build　surface　of　the　fabricated　parts,　and　the　unmelted　defects　can　be　eliminated　when　the　point　distance　is　35　mu　m.　The　relative　density　of　the　fabricated　parts　decreased　with　the　increase　of　the　point　distance,　and　the　hatch　spacing　has　different　characteristics　with　respect　to　the　relative　density　of　the　fabricated　parts　under　different　laser　powers.　It　was　observed　that　the　most　of　experimental　groups　with　higher　relative　densities　than　99%,　and　the　highest　density　could　reach　99.99%.　The　surface　roughness　can　be　reduced　to　less　than　10　mu　m　through　remelting　optimization.　Originality/value　The　research　results　can　provide　theoretical　support　for　scientific　researchers　and　data　support　for　engineers.