A 26-year-old male presented with a very rare spinal subdural hematoma which developed 3 days after minor trauma. Magnetic resonance imaging showed the very large hematoma, extending from the C-1 to the T-11 levels, ventral to the spinal cord. An attempt to remove the hematoma via a posterior approach on the next day failed. On the 3rd hospital day, the hematoma was partially removed at the C7-T1 intervertebral level through an anterior approach. Neurological signs of paraplegia, and urinary and bowel disturbances did not improve postoperatively.