In　this　paper,　silver-bearing　antibacterial　duplex　stainless　steels　were　prepared　by　adding　Ag　or　Cu-Ag　alloy　particles.　The　microstructure,　mechanical　properties　and　fracture　morphology　were　investigated　in　detail　by　OM,　ESEM　and　tensile　testing　machine.　Tensile　tests　indicate　that　the　tensile　fractures　of　Ag-bearing　antibacterial　duplex　stainless　steel　and　CD4MCu　have　the　typical　ductile　character　and　toughening　nests　are　isometric.　After　the　solution　treatment　at　1050　degrees　C,　for　the　material　prepared　by　adding　150-300　mu　m　Cu-Ag　master　alloy　after　the　solution　treatment　at　1050　degrees　C,　its　plasticity　is　superior　to　that　of　CD4MCu,　the　strength　and　hardness　are　equivalent.　But　for　the　material　prepared　by　adding　pure　Ag　alloy　particles,　its　plasticity,　strength　and　hardness　are　less　than　that　of　CD4MCu.　When　the　solution　temperature　rises,　the　plastic,　strength　and　hardness　of　the　material　prepared　by　adding　150-300　mu　m　Cu-Ag　decrease.