introduction：Flow Diverters（FD）provide a new method for the treatment of intracranial aneurysms. A more reasonable FD embolization strategy is developed by using numerical simulation method based on computational fluid dynamics (Computational Fluid Dynamics, FD) before operation. The rupture of IA and perioperative complications can be effectively reduced by a higher metal coverage (MC) of FD at the neck of the aneurysm. Methods: The porous media model is innovatively used to simulate the process of FD implantation into aneurysms, and the initial values of its own unique porous media momentum source parameters (permeability and inertial resistance) are calculated for a specific FD (Tubridge).The changes of hemodynamic parameters such as blood flow velocity, wall shear stress (WSS), volume flow and pressure of aneurysm-roof were compared under different situation (initial values of 80%, 90%, 100%, 110% and 120%), and the sensitivity analysis of porous media model for hemodynamic parameters of patient-specific intracranial aneurysms was further carried out. Results: The sensitivity of the hemodynamic parameters of IA to the permeability of porous media model was as follows: > > ,but the sensitivity to inertia resistance was lower. Conclusions: To choose different permeability parameters is to choose different MC of FD, so it is necessary to adjust specific permeability settings to model FD of different MC.