Subarachnoid hemorrhage can not find the cause of bleeding, you can only target the subarachnoid hemorrhage disease itself for active treatment and improve lifestyle. Subarachnoid hemorrhage is one of the most common intracranial bleeding disorders, including trauma-induced hemorrhage and spontaneous hemorrhage, while the common cause of the latter is aneurysm rupture and hemorrhage, vascular malformations, coagulation abnormalities, etc., which can also lead to spontaneous subarachnoid hemorrhage. In the clinic, some patients are unable to find the exact cause of hemorrhage even after cranial artery CT angiography, invasive arteriography and other vascular examinations. For this group of patients, timely and effective treatment can be carried out for the subarachnoid hemorrhage itself, such as ventricular drainage surgery for the hemorrhage itself, the use of medication to prevent vasospasm (such as nimodipine tablets), the use of mannitol injection, furosemide injection, etc. to control the intracranial pressure, and the use of antihypertensive drugs, such as enalapril, to control hypertension, etc. Meanwhile, it is recommended that these patients should pay attention to their daily life, so as to maintain a high standard of living. At the same time, it is recommended that these patients should maintain good living habits, quit smoking and drinking, maintain emotional stability, do not overwork and emotional excitement, and avoid bumping and trauma to avoid inducing increased bleeding and recurrence. If there is any discomfort, consult a doctor as soon as possible and standardize the treatment under the guidance of a professional physician.