Intracranial aneurysm most commonly develops after sudden rupture and hemorrhage causing severe headache, nausea and vomiting, and altered mental status, which is life-threatening in severe cases, and is a highly disabling and fatal disease. There are two ways to treat aneurysms, one is craniotomy for clamping and the other is endovascular intervention. The former surgery is more traumatic, while the latter is a minimally invasive treatment method, which is accepted by more and more patients. Now, I would like to introduce a case of aneurysm patient treated by my application of interventional embolization method. Patient Li, female, 56 years old, was admitted to the hospital with sudden severe headache with nausea and vomiting for 3 days, head CT examination suggested: spontaneous subarachnoid hemorrhage, CTA confirmed for the right posterior communicating artery aneurysm, and was treated with endovascular interventional embolization for the aneurysm under general anesthesia, and the operation went smoothly, and the lumbar large pool was put in place to drain the bloody cerebrospinal fluid for 1 week after the operation, and the condition recovered rapidly, and he recovered and discharged from the hospital 2 weeks later without sequelae.