The patient’s postoperative consciousness, speech, and physical activity were all quite good after the clamping of multiple cerebral aneurysms just the day before yesterday. The patient had progressive impairment of consciousness, and today’s cranial CT: extensive cerebral infarction. When will we conquer the ultimate killer after aneurysm rupture? Clinical manifestations of cerebral vasospasm: impaired consciousness, limb paralysis, aphasia, epilepsy, etc. Cerebral vasospasm is one of the three major complications after cerebral aneurysm hemorrhage, the others are in hemorrhage and hydrocephalus. Current treatments for cerebral vasospasm include surgical removal of blood accumulation in the brain pool, application of calcium antagonists, elevated blood pressure, volume expansion, hemodilution, lumbar pool drainage, hyperbaric oxygen and other treatments, but overall, cerebral vasospasm occurs in most patients after hemorrhage, and the severity may be related to the amount of hemorrhage and the time the hemorrhage exists.