Intravascular coil embolization therapy has been widely used for intracranial aneurysms due to its fewer traumas and rapid recuperation.In recent years, flow diverter, as a major breakthrough in endovascular treatment of intracranial aneurysm, mainly manifests as a transformation of ideas from aneurysm capsule embolization to reconstruction of the parent artery.This technology brings a new approach to the treatment of giant intracranial aneurysms.Firstly, this article introduced the numerical simulation methods of flow diverter and coil, lists the morphological and hemodynamic parameters which affected the curative effect of aneurysms.Then, the important roles of porosity of flow diverter, packing density of coil and wall shear stress on improving hemodynamics in tumor sac were described in detail.Finally, the feature comparison between FD and coil for intracranial aneurysm therapy was done by numerical simulation in accompany with analyzing the treatment effects of flow diverter and coil.The results showed that the choice of flow diverter had certain superiority for giant intracranial aneurysms, however more studies concluded that the delayed rupture rate and recurrence rate of aneurysms might be lower when the loosing coil embolization was taken into account with flow diverter technology.Furthermore, the conclusion made afurther explanation of the developing direction of giant intracranial aneurysms treated with flow diverter and coil embolization.