The biggest danger of intracranial aneurysm is that rupture and bleeding cause intracranial hemorrhage, cerebral vasospasm, cerebral infarction, hydrocephalus, etc., which leads to disability and death of patients. Statistics show that the first rupture and bleeding can lead to death of about 40% of patients, and about 50% of patients die from rebleeding, and rebleeding mostly occurs 2~4 weeks after the first bleeding; therefore, aneurysms, especially ruptured aneurysms, should be actively intervened surgically to prevent rebleeding. Both endovascular treatment and modern microscopic neurosurgery can safely and effectively treat intracranial aneurysms. Endovascular treatment of intracranial aneurysm is mainly based on electrolytic spring coil, which is placed in the aneurysm through microcatheter under X-ray fluoroscopy, and the aneurysm is cured by occluding the aneurysm with the mechanical filling of the spring coil and the thrombus facilitated by the spring coil, and keeping the aneurysm-carrying artery open. Since craniotomy and aneurysm exposure are not required and there is no interference with brain tissue, endovascular treatment can be performed without any restriction on the timing of surgery and should be embolized as early as possible to prevent rebleeding whenever appropriate. Current endovascular techniques can treat most intracranial aneurysms, but giant aneurysms, wide-necked aneurysms and microaneurysms are still their difficulties; moreover, the cost is more expensive, which also limits the options for some patients. Another effective treatment for intracranial aneurysms is aneurysm neck clamping using modern microneurosurgical techniques, which aims to block the blood supply to the aneurysm to prevent rebleeding while keeping the aneurysm-carrying artery open; if the aneurysm-carrying artery has good collateral circulation, aneurysm clamping or aneurysm isolation can be performed; for aneurysms that are difficult to be clamped, aneurysm wrapping can be performed, but the results are difficult to For aneurysms that are difficult to be clamped, aneurysm wrapping can be performed, but the results are not certain. Surgery for ruptured aneurysms is divided into acute surgery, which refers to surgery within 72 hours of ruptured subarachnoid hemorrhage, and postponed surgery, which refers to surgery after two weeks. It is currently accepted that for patients with grades I-III, the aneurysm should be surgically clamped as early as possible to prevent rebleeding and to remove subarachnoid blood and hematoma and relieve cerebral vasospasm. For patients with grades IV-V, acute surgery or deferred surgery should also be chosen based on the patient’s general status, the presence of intracranial hematoma, the presence of brain herniation, and the experience and confidence of the surgeon. If deferred surgery is chosen, while waiting for conservative treatment, the patient should be absolutely bedridden, kept quiet, closely monitored for vital signs and mental and pupillary changes, appropriately controlled blood pressure, prevented from constipation with laxatives, and prevented from cerebral vasospasm, etc. The choice of aneurysm treatment plan is closely related to the patient’s age, underlying disease, basic physical condition, location, size and type of aneurysm, so the decision should be made by experienced clinicians according to the specific situation. Patients should actively seek medical consultation when they have symptoms to achieve early diagnosis and early treatment to avoid delaying the disease.