In　this　study,　the　cobalt-chromium-molybdenum　(CoCrMo)　alloys　containing　varying　Cu　contents　(CCM-xCu,　x　=　0,　2,　3,　4　wt%)　were　fabricated　via　the　selected　laser　melting　(SLM)　method.　The　influences　of　Cu　content　on　tribological　performance　and　corrosion　resistance　were　investigated.　The　2　and　3　wt%　Cu　contributed　to　inhibiting　the　generation　of　the　HCP　phase,　whereas　the　inhibitory　effect　was　quite　limited　at　4　wt%　Cu.　Notably,　4　wt%　Cu　led　to　the　formation　of　Cr-enrich　precipitates　in　the　matrix,　which　was　partially　coherent　with　the　Cu　nanoparticle.　The　corrosion　resistance　of　the　CCM　alloy　was　enhanced　as　the　2　and　3　wt%　Cu　added　into　the　CCM　alloy,　contrarily,　which　deteriorated　when　Cu　content　reached　4　wt%.　For　the　CCM-2Cu　and　CCM-3Cu,　Cr-precipitates　played　a　major　role　in　enhancing　the　wear　resistance,　while　the　Cu　lubrication　effect　working　in　coordination　with　Cr-precipitates　determined　that　for　the　CCM-4Cu.　This　study　was　expected　to　achieve　better　tribology　and　corrosion　properties　of　SLM-produced　CCM　alloys　by　tailoring　microstructure　through　the　Cu　element.　(c)　2023　The　Author(s).　Published　by　Elsevier　Ltd.　This　is　an　open　access　article　under　the　CC　BY-NC-ND　license　(http://creativecommons.org/licenses/by-nc-nd/4.0/).