In clinical practice, cerebrovascular malformations are a major, and in many cases, very major surgery involving life-threatening risks. Cerebrovascular malformation is a general term for a large category, internally divided into many subcategories, such as aneurysms, arteriovenous malformations, arteriovenous fistulas, cavernous hemangiomas, etc., of which aneurysms are the most dangerous. Aneurysms are commonly referred to as intracranial time bombs, and once damaged, they are likely to cause death and are very problematic in terms of overall follow-up treatment. In some cases, the surgery is relatively simple for a simple saccular aneurysm, but in some cases, the cerebrovascular malformation is a sandwich aneurysm or a serpentine aneurysm, which is more troublesome, and even the postoperative results are not always particularly good and risky, so it must be evaluated in context.