In　this　article,　a　new　particle　tracking　model　is　established　through　high　temperature　erosion　modeling　test.　Based　on　the　model,　steam-particle　flows　in　the　governing　stage　cascade　of　a　supercritical　steam　turbine　are　systematically　investigated　and　the　influence　of　oblique　stator　on　the　aerodynamic　performance　and　erosion　characteristics　of　governing　stage　blades　is　carefully　studied.　Results　show　that　with　the　increase　of　nozzle　oblique　angle,　the　maximum　load　position　gradually　moves　toward　nozzle　trailing　edge.　Consequently,　secondary　flow　loss　of　nozzle　cascade　gradually　decreases.　Compared　with　the　prototype　structure　of　governing　stage,　stage　efficiency　increases　by　0.8%,　0.35%,　and　0.44%,　respectively,　when　nozzle　oblique　angle　increases　to　15　degrees,　30　degrees,　and　45　degrees.　Meanwhile,　erosion　at　the　trailing　edge　of　nozzle　pressure　side　and　leading　edge　of　rotor　suction　side　gradually　decreases,　while　erosion　of　rotor　pressure　surface　increases.　The　maximum　erosion　position　of　nozzle　pressure　surface　and　rotor　suction　surface　keeps　constant,　but　the　maximum　erosion　position　of　rotor　pressure　surface　gradually　moves　forward.　Comprehensive　analysis　shows　that　when　nozzle　oblique　angle　reaches　30　degrees,　erosion　of　nozzle　trailing　edge　reduces　by　14%,　and　stage　efficiency　increases　by　0.35%;　erosion　resistance　and　aerodynamic　performance　of　governing　stage　can　be　both　well　considered.