Whether the patient can recover to normal state after craniotomy for aneurysm depends on the patient’s preoperative state and whether there are serious surgical complications, and in general the patient can recover well. If the aneurysm is unruptured, the craniotomy goes well without damaging the brain tissue or brain nerves, and the patient can recover to a normal state after the surgery with active rehabilitation. If the aneurysm has been ruptured, the blood enters the subarachnoid space and forms a hematoma, and the process of hematoma absorption will produce inflammatory substances to damage the cerebral nerves, which may cause cerebral vasospasm or cerebral infarction leading to hemiplegia, aphasia and other serious complications. When intracranial aneurysm is found, it must be treated actively so as not to delay the condition and cause serious consequences.