Subarachnoid hemorrhage, the most common cause of which is due to the rupture of an aneurysm. The rupture of an intracranial aneurysm leads to blood entering the subarachnoid space, causing corresponding clinical symptoms. Patients may experience severe headaches, nausea and vomiting, accompanied by significant restlessness, and may also develop complications such as cerebral vasospasm, hydrocephalus, which can be life-threatening. The treatment for subarachnoid hemorrhage mainly includes: First, it is recommended to promptly complete a full cerebral angiography. If an aneurysm is found, interventional embolization of the aneurysm may be administered. Second, the patient should be advised to rest in bed and maintain emotional stability. Some sedative medications should be given to the patient. Additionally, calcium channel blockers should be administered to prevent cerebral vasospasm. Furthermore, electrolyte disturbances must be corrected to prevent severe complications such as hydrocephalus.