Subarachnoid hemorrhage caused by traffic accidents should be immediately assessed for consciousness, respiration, heartbeat, etc., and resuscitation such as cardiopulmonary resuscitation (CPR) should be performed in situ if necessary. After being sent to the hospital, the patient’s vital signs such as blood pressure, consciousness, pupil condition, heart rate, etc. should be continued to be monitored and treated with oxygen and other symptomatic treatments. In the case of relatively stable vital signs, it is necessary to immediately improve the cranial CT angiography to investigate whether there is an aneurysm. If it is simple traumatic subarachnoid hemorrhage, usually the bleeding is diffuse and there is no indication for surgery, it can be treated with symptomatic treatment, such as oxygen, sedation, fluid replacement, pain relief, etc., and the patient’s consciousness and pupil condition should be closely observed, and the cranial CT should be reviewed dynamically. If combined with other diseases, such as aneurysm or skull fracture, it is necessary to decide whether to immediately perform total cerebral angiography or skull fracture repair surgery according to the specific conditions of the patient. Subarachnoid hemorrhage caused by traffic accidents should be immediately sent to the hospital for treatment, and neurosurgeons should be asked to evaluate the condition.