This report describes the case of 49-year-old female patient who developed a lumbar spinal subdural hematoma as a complication of lumbar discectomy. We give the details of the case and review the relevant literature. Our conclusion is that spinal subdural hematoma should be considered a possible postoperarive complication of lumbar discectomy if radicular pain and back pain recur soon after a patient has undergone a successful surgery of lumbar disc herniation.