Intracranial subdural hematoma is an exceptionally rare complication of spinal anesthesia. An 88-year-old female patient diagnosed with grade V uterine prolapse with rectocystocele received a vaginal hysterectomy and anteroposterior repair under spinal anesthesia. At 4 days postoperatively, she appeared to have decreased orientation, inappropriate behavior, and right side weakness grade III. Brain MR diffusion and CT revealed a bilateral subdural hematoma. She was improved after burr hole drainage. We report a case of intracranial subdural hematoma developing after spinal anesthesia, a rare complication.