In　order　to　make　more　precise　analysis　on　wall　shear　stress　and　gradient　variation,　it　is　necessary　to　create　a　patient-specific　model　of　aortic　arch　aneurysm　that　can　perform　particular　meshing　in　boundary　layer　for　numerical　simulation.　Based　on　a　surface　model　in　STL　format,　reverse　engineering　concept　is　adopted　to　reconstruct　a　solid　model　of　aortic　arch　aneurysm　by　means　of　integrating　CAD　software　of　geomagic　and　Pro/E,　and　its　simplified　stents　model　is　also　created.　By　using　ANSYS　software,　this　model　is　divided　into　several　parts.　Particular　meshing　is　performed　especially　in　boundary　layer　and　around　the　stents.　Hemodynamics　simulation　is　carried　out　by　using　the　finite　element　model.　This　solid　model　can　be　meshed　according　to　particular　requirements　in　several　parts　respectively,　and　employed　to　simulating　hemodynamics　in　aortic　arch　aneurysm　treated　with　endovascular　stent.　The　method　of　modeling　is　applicable　and　can　be　used　as　a　reference　for　similar　model　construction.