Intracranial aneurysm is an outpunching in the cerebrovascular that, if it is ruptured, subarachnoid hemorrhage occurs and subsequently leads to permanent damage or death of the patient. The risk of surgery is higher than the risk of rupture. Sometimes a person lives with an unruptured aneurysm for many years and if a surgery is done, side effects might be higher than the risk of the aneurysm rupture. Hence, the attention of the biomechanics engineers has been drawn to this field. With the advanced techniques of cerebral imaging and the science of "computational fluid dynamics," the researchers attempted to simulate the flow of blood in an aneurysm, and by examining hemodynamic and morphological parameters, and correlating them with the patient’s conditions, find a solution to predict the aneurysm conditions. The purpose of this study is to simulate and analyze "Computational Fluid Dynamics (CFD)" and "Fluid-Structural Interaction (FSI)" in a cerebral aneurysm and to examine its hemodynamic and morphological parameters. For this purpose, the transient blood flowed in an aneurysm has been simulated with the real dimensions in the ADINA 9.3 finite element software. Coupling of fluid and solid equations was done bilaterally. The Reynolds number was around 400 and the flow was assumed laminar. It was observed that when the wall of the vessel is considered to be elastic, the value of WSS (Wall Shear Stress) is 12% lower in comparison to the rigid state and the rigid wall will feel a higher WSS. Also, the physique and hemodynamic of a referenced aneurysm have been investigated. One of the important points in this study is to apply ICP (intracranial) pressure on the vessel wall. In order to investigate the morphological parameters, the dimensionless parameters of the aspect ratio, size ratio and the bottleneck factor were changed over the real value ranges and 32 geometries were considered. These geometries were confirmed by a surgeon and then simulated. The results showed that FSI analysis for different morphologies has its own effect. It was observed that by increasing the size ratio, the amount of WSS is increased and there is a possibility of a first type rupture for aneurysms. By increasing the aspect ratio, a secondary stream is created in an aneurysm that, with increasing relative residence time, there is a possibility of a second type rupture of the aneurysms. The effect of the bottleneck factor is on changing the position where the highest amount of displacement of the vessel wall occurs. These results help a surgeon to predict the condition of an aneurysm by considering its morphology. The results of this study can lead to the development of alternative therapies for this disease, as well as helping the physician to make a decision on surgical or non-surgical treatment. Keywords: Intracranial Aneurysm, CFD, Fluid-structure interaction, morphological, hemodynamic