5 mm. Oblique coronal MR of secrum could show the full length of sacral never. There were some primiral espression of MR of sacral neurological dam-age -- the variation of sacral never canal, the fatty disappearance of peri-never, the route alteration of never. 14 patients were followed up from 6 to 12 months with an average of 7.1 months. According to the BMRC score system the excellent result was obtained in 9 cases, good in 1 case, no change in 1 case. Con-clusion Clinic history and neurological examination associated with X-ray, CT and MRI was the important of the diagnosis of sacral neurological damage, the new surgical approach may be a ideal approach to treat sacral neurological damage in the sacral nerve canal region.