Excellent　biocompatibility　and　corrosion　resistance　of　implants　are　essential　for　Ti6Al4V　parts　fabricated　by　selective　laser　melting　(SLM)　for　biomedical　applications.　To　achieve　better　corrosion　resistance　and　biocompatibility　of　Ti6Al4V　parts,　the　effects　of　SLM　processing　parameters　on　the　corrosion　resistance　and　the　biocompatibility　of　Ti6Al4V　parts　are　investigated　by　changing　the　scanning　speeds　and　laser　powers.　The　detailed　influence　mechanism　of　processing　parameters　on　the　properties　of　Ti6Al4V　parts　is　studied　from　two　aspects,　including　microstructure　and　defects.　It　is　found　that　the　corrosion　resistance　and　biocompatibility　of　Ti6Al4V　parts　can　be　adjusted　by　changing　the　scanning　speed　and　the　laser　power　due　to　the　constituent　phase　and　the　number　and　size　of　defect　holes　of　Ti6Al4V　parts.　Compared　with　the　laser　power,　the　scanning　speed　has　a　stronger　influence　on　the　performance　of　the　part,　which　can　be　used　as　＂coarse　tuning＂　based　on　the　performance　requirements.　At　the　scanning　speed　of　1100　mm/s　and　the　laser　power　of　280　W,　Ti6Al4V　parts　with　better　corrosion　resistance　can　be　obtained.　Ti6Al4V　parts　with　better　biocompatibility　are　fabricated　at　the　scanning　speed　of　1200　mm/s　and　the　laser　power　of　200　W.