Abstract: Endovascular stents with different stent shapes or wire cross-section shapes have different effects on the hemodynamics of basilar aneurysm.To quantitatively understand the difference,computational fluid dynamics simulation were performed to investigate the hemodynamics of basilar sinuous aneurysms treated with four types of virtual mesh stents with different porosities and different wire cross-section shapes.Results show that the triangle stent with a lower porosity has more superiority than other stents in weakening the impact of blood to the aneurismal wall and decreasing the local high pressure and wall shear stress.The flow resistance of the new stent with a triangle cross-section is different when blood flows in and out of the aneurismal sac,which brings about different hemodynamics in aneurusms after the stent intervention.The stent with a triangle section is more suitable for sinuous basilar aneurysms comparatively.Those results can provide some theoretically guide the structural design of stents.