Intracranial aneurysm is an abnormal localized protrusion of a cerebral artery whose rupture and bleeding leading to subarachnoid hemorrhage is a common and catastrophic condition with a mortality rate that can be as high as 50%, and rebleeding is the leading cause of death in patients with aneurysms. Currently there are three clinical methods available to determine the presence of intracranial aneurysms and to depict the size and morphological features of the aneurysm: CT angiography (CTA) with intravenous contrast, magnetic resonance angiography (MRA) and direct catheter cannulation angiography, the latter being the gold standard for diagnosis. There are three treatment options available for cerebral aneurysms: observation, cranial clamping and intervention. For an aneurysm that has already ruptured and bled, observation is equivalent to leaving an untimely bomb in the brain, which may rupture and bleed again within a short period of time, resulting in the death or disability of the patient. Therefore, spontaneous subarachnoid hemorrhage (SAH) should be treated aggressively with surgical therapy once rupture and bleeding of the aneurysm is confirmed. Aneurysm clamping is the classic treatment for aneurysms, first used in 1937, and has saved a large number of patients’ lives; however, for some aneurysms (depending on the location and morphology of the aneurysm), the risks of surgical clamping outweigh the possible benefits. ISAT is the only large, prospective, randomized trial to date comparing surgical and endovascular techniques, and a one-year evaluation showed a significantly higher rate of disability in surgical patients than in the endovascular phase. Currently, out of spring coil embolization alone, the use of new materials and techniques such as stents, balloons, various modified spring coils, liquid embolic materials, and dual microcatheters has also broadened the indications for aneurysm intervention. The optimal treatment plan for ruptured and unruptured intracranial aneurysms is currently inconclusive, and it is important to take into account all the factors that may affect the treatment of intracranial aneurysms, such as the site of the aneurysm, its volume, the state of the patient, the amount of bleeding, and the technical specialties of the physicians and hospitals.