Whether the patient can wake up from a subarachnoid hemorrhage coma depends on the severity of the patient’s condition, such as the amount of bleeding, the presence of cerebral edema and brain hernia. Subarachnoid hemorrhage is caused by the rupture of cerebral blood vessels into the subarachnoid space, and clinically, the main cause is the rupture of intracranial aneurysms. The amount of hemorrhage can be judged on CT, if there is hemorrhage in the cerebral sulcus, cerebral pool, cerebral fissure or even intracerebral ventricle, it means that the amount of hemorrhage is more, the patient’s condition is more serious, and the probability of the patient waking up after coma is lower. At this time, the clinical need to take timely measures to stop bleeding, if necessary, drainage. When the subarachnoid hemorrhage is serious, it will lead to the formation of cerebral edema with increased intracranial pressure, and in severe cases, cerebral hernia will occur, in which case the probability of the patient waking up after coma will decrease. In this case, the probability of the patient waking up after coma will decrease. In this case, treatment measures to reduce intracranial pressure should be taken in time. When subarachnoid hemorrhage is detected, it is necessary to consult a doctor in time and carry out standardized treatment under the guidance of a doctor.