The recovery period for traumatic subarachnoid hemorrhage ranges from 1 to 4 weeks, or even longer, depending on factors such as the severity of the condition and the presence of complications. Traumatic subarachnoid hemorrhage mainly refers to subarachnoid hemorrhage caused by trauma. Usually, if the amount of bleeding is small and there are no obvious complications, the blood can be gradually absorbed in about 1~2 weeks and the patient can recover gradually. However, if the bleeding is more severe, or accompanied by craniocerebral trauma, hydrocephalus and other complications, the recovery period may take 2~4 weeks or even longer. During the recovery period of traumatic subarachnoid hemorrhage, it is necessary to follow the doctor’s instructions to actively treat and closely monitor the state of the brain, and once complications such as hydrocephalus occur, targeted treatment should be carried out in a timely manner to prevent the condition from worsening.