The　effects　of　different　austempering　temperatures　on　the　microstructure　and　properties　of　high　manganese　carbidic　austempered　ductile　iron　(CADI)　were　studied.　The　results　show　that　with　the　increase　of　the　austempering　temperature,　the　acicular　ferrite　in　the　high　manganese　CADI　structure　becomes　coarser,　and　it　turns　into　feathers.　At　the　same　time,　the　retained　austenite　and　austenite　carbon　content　gradually　increase.　The　austempering　temperature　has　no　obvious　effect　on　the　hardness　of　high　manganese　CADI,　and　the　wear　resistance　decreases　with　the　increase　of　the　austempering　temperature.　When　the　austempering　temperature　is　270　degrees　C,　it　has　the　best　wear　resistance　and　the　macroscopic　hardness　is　also　very　high.