Arachnoid hemorrhage is a subarachnoid hemorrhage that is generally more severe, with death occurring in about 10% of patients before they receive treatment, a death rate of about 25% or higher within 1 month, and a death rate of about 50% for rebleeding, with specific survival times varying depending on the condition. Subarachnoid hemorrhage is a clinical syndrome in which blood flows into the subarachnoid space after rupture of blood vessels at the base of the brain or on the surface of the brain, causing the corresponding clinical symptoms. The risk factors include hypertension, smoking, and excessive alcohol consumption. In addition, elderly and frail patients have a poorer prognosis than younger patients, and aneurysmal subarachnoid hemorrhage has a poorer prognosis than non-aneurysmal subarachnoid hemorrhage. During the treatment period, attention should be paid to quiet rest, avoiding emotional excitement, drinking more water, keeping bowel movements smooth; actively treating the primary disease, reviewing regularly, and avoiding rebleeding as much as possible, etc., which will help prolong survival.