In　this　work,　different　contents　of　Cu　were　added　into　carbidic　austempered　ductile　iron　(CADI)　to　improve　the　corrosion　resistance　and　the　corrosive　wear　resistance.　Microstructures　of　CADI　have　been　systematically　investigated　by　scanning　electron　microscope　(SEM),　transmission　electron　microscopy　(TEM),　X-ray　diffraction　(XRD),　atomic　force　microscope　(AFM).　The　results　showed　that　with　the　addition　of　Cu　elements,　the　thickness　of　bainitic　ferrite　plates　and　the　potential　difference　(Delta　Umatix-graphite　nodules　and　Delta　Umatix-carbides)　were　reduced　significantly.　The　effect　of　Cu　on　the　corrosion　resistance　and　the　corrosive　wear　resistance　has　been　studied　by　an　electrochemical　workstation　and　two　kinds　of　corrosive　wear　tester.　In　addition,　worn　surfaces　and　corroded　surfaces　of　the　samples　have　been　examined　by　SEM,　3D　laser　scanning　microscope　and　X-ray　photoelectron　spectroscopy　(XPS).　As　the　Cu　content　increased,　the　corrosion　resistance　of　CADI　under　acidic　condition　increased.　When　the　Cu　content　was　1　wt%,　both　corrosive　wear　resistance　without　load　under　alkaline　condition　and　corrosive　wear　resistance　with　load　under　alkaline　and　acidic　condition　were　optimal.　Nevertheless,　under　acidic　condition,　the　corrosive　wear　resistance　without　load　of　CADI　with　1.5　wt%　Cu　was　optimal.