In　this　paper,　the　effects　of　copper　addition　(0-2.0　wt.%)　on　the　microstructure　and　properties　of　carbidic　austempered　ductile　iron　were　studied　using　an　optical　microscope,　a　scanning　electron　microscope,　a　Rockwell　hardness　tester,　a　pendulum　impact　tester,　an　X-ray　diffractometer,　a　block-on-ring　wear　testing　machine　and　an　electrochemical　tester.　The　amount　of　carbides　and　graphite　nodules　simultaneously　decreased　with　the　increase　in　Cu　content.　Cu　also　improved　the　nodularity　of　graphite,　made　the　graphite　nodules　grow,　increased　the　pearlite　content　and　refined　the　pearlite.　After　austenitizing　(900　degrees　C　/　100　min)　and　austempering　(300　degrees　C　/　100　min),　the　amount　and　size　of　the　acicular　ferrite　significantly　reduced　with　the　addition　of　Cu.　In　contrast,　the　amount　of　retained　austenite　dramatically　increased,　and　the　carbon　content　in　retained　austenite　slightly　increased.　The　hardness　of　carbidic　austempered　ductile　iron　had　no　obvious　change　with　the　increase　in　Cu　content.　The　wear　resistance　of　carbidic　austempered　ductile　iron　first　increased　and　subsequently　decreased,　and　the　impact　toughness　and　corrosion　resistance　were　improved　with　the　increase　in　Cu　content.　The　comprehensive　properties　of　carbidic　austempered　ductile　iron　were　optimal,　with　the　Cu　content　of　1.0　wt.%.