Objective In order to investigate a method for model construction that could meet particular demands on meshing, a patient-specific model of aortic arch aneurysm was established which can be divided and meshed in finite element software. Method Based on a surface model in STL format, reverse engineering concept was adopted to reconstruct a solid model of aortic arch aneurysm by means of integrating CAD software of Geomagic and Pro/E, and simplified stents model was also created in it. This model was transferred to ANSYS software and divided into several parts. Result Particular meshing was performed especially in boundary layer and around the stents, and hemodynamics simulation was carried out using the finite element model. Conclusions This solid model could be meshed according to particular requirements in several parts respectively, and employed to simulate hemodynamics in aortic arch aneurysm treated with endovascular stent. The method of modeling was applicable and could be used as a reference for similar model construction.