29Cr　super　duplex　stainless　steel　was　prepared　with　IF　furnace.　The　effects　of　solution　temperature　on　microstructure,　mechanical　properties　and　corrosion　resisting　property　of　29Cr　cast　super　duplex　stainless　steel　were　studied　by　means　of　optical　microscope　(OM),　scanning　electron　microscopy　(SEM),　energy　dispersive　spectrometry　(　EDS),　X-ray　diffraction　(XRD)　and　electrochemical　polarization　curve.　The　results　indicate　that　the　partition　coefficient　of　Cr(K　Cr)　in　two　phases　plays　a　leading　role　on　the　properties　when　the　solution　temperature　is　1050-1150°C　.　With　increasing　solution　temperature,　K　Cr　increases　first　and　then　decreases.　The　lower　the　K　Cr,　the　higher　the　strength　and　the　worse　the　corrosion　resistance.　The　maximum　strength　and　plasticity　respectively　are　825　MPa　and　35%　at　solution　treatment　temperature　1100°C　,　while　the　corrosion　current　density　is　0.603　μA·cm　-2　and　corrosion　resistance　is　the　worst.