The term “aneurysm” is often misunderstood and confused with “tumor”, but in fact it is a completely different matter. The medical definition of intracranial aneurysm is a localized abnormal enlargement of the cerebral arteries, which is commonly referred to as the arterial wall of a bicycle, but the difference is that the arteries are filled with blood and the inner tube is gas. The difference is that the artery is filled with blood and the inner tube is filled with gas. If the inner tube is worn out locally, a bulge will form at the point of wear when it is inflated. An “aneurysm” is formed, where the inner tube wall becomes weak, and if it ruptures, an “aneurysm rupture hemorrhage” is formed. According to statistics, once the aneurysm ruptures (subarachnoid hemorrhage), the mortality rate of the first hemorrhage reaches 40%, and the mortality rate of the second hemorrhage is 60%. 35% of the patients who survived the first hemorrhage after conservative treatment will die within one year because of another hemorrhage. 51% will die within five years, and more than 60% of the people who suffered serious disability or died after the bleeding of the unruptured aneurysm. Therefore, cerebral angiography should be carried out in time for such people to have a clear diagnosis and timely treatment in order to obtain satisfactory results. How to treat aneurysm aneurysm is a disease with high mortality and disability rate in young and middle-aged patients, once aneurysm is diagnosed, necessary treatment must be given, firstly, in the acute stage, due to the blood stimulation of blood vessels at the base of the brain or the surface of the brain, causing cerebral vasospasm, leading to cerebral infarction, with the appearance of aggravation of impaired consciousness, hemiparesis, aphasia and other brain damage manifestations; and secondly, because this kind of patients are most prone to recurring at the time of 2-4 weeks, which will make the condition deteriorate and cause death. Death. The purpose of treatment is to remove the cause of the disease, i.e. to eliminate the damage of the arterial wall, and try to prevent the re-rupture of the aneurysm, including craniotomy, direct clipping of the aneurysm neck, and intracapsular embolization of the aneurysm, or a combination of the two treatments. Endovascular treatment of aneurysm is to deliver a microcatheter into the aneurysm and occlude the aneurysm with spring coils, medical glue and other materials, so as to prevent bleeding and recurrence of the aneurysm and make the patient cured. Some European and American countries have adopted endovascular treatment as the first choice of treatment for aneurysms. For aneurysms that are difficult to reach by craniotomy, patients who are in poor general condition and difficult to tolerate surgery, or patients in the acute stage of hemorrhage, endovascular treatment can also be effective. Endovascular treatment for cerebrovascular disease embodies the development trend from inoperable to operable, from small traumatic surgery to minimally invasive surgery, and from minimally invasive to non-invasive, which has the outstanding advantages of small trauma, low pain, low risk, high success rate and so on, and is widely accepted by patients.