The　effects　of　aging　treatment　at　650-950°C　for　6　h　on　microstructure,　mechanical　property　and　corrosion　resistance　of　solusion-treated　2906　super　duplex　stainless　steel　were　studied　by　means　of　optical　microscope(OM),　X-ray　diffraction(XRD),　scanning　electron　microscopy(SEM),　X-ray　energy　dispersive　spectrometry　(EDS)　and　electrochemical　property　test.　The　results　indicate　that　no　σ　phase　is　observed　and　the　mechanical　properties,　corrosion　resistance　are　not　significant　changed　for　the　steel　aged　at　650°C　for　6　h.　When　aging　at　750°C,　the　σ　phase　content　reaches　the　maximum,　which　results　in　a　significant　decline　in　tensile　strength　and　corrosion　resistance,　but　the　hardness　increases.　As　the　aging　temperature　further　increased　to　850°C　and　950°C,　the　amount　of　σ　phase　is　gradually　reduced,　and　corrosion　resistance　is　slightly　recovered　compared　with　that　of　the　steel　aged　at　750°C.