Cervical disc herniation is relatively common and can produce neurological changes which mimic another neural compression diseases. Radiological diagnosis of cervical disc herniation is usually not difficult. But the myelographic deformities simulating an intra-medullary tumor and cervical spondylosis also can be produced by cervical disc disease has been experienced. And so we reviewed radiographic changes of 38 cases of confirmed cervical disc herniation. It is the purpose of this review to establish the roentgen signs of cervical disc herniation in differential diagnosis. The results are: 1. 25 cases of 38 confirmed cervical disc herniation (66%) have single involvement and 13 cases involved multiple levels. Most of them (92%) were located at C5-6 and C6-7. 2. On plain view of cervical spine, most of cases showed degenerative changes and only two cases were normal. Disc space narrowing were seen in 74% of cases and 7 cases have moderate degree of spurring at neurocentral jo nts. Both cervical spondylosis and disc protrusion produced superimposed in many cases. 3. On myelography, 32 of 38 cases (84%) showed the extradural defects on pantopaque column at the interspace levels and 11 cases showed nerve root thickening. It was not difficult to diagnose myelographically in most of these cases and myelographic findings were well correlated to surgical findings in the location and the type. 4. 6 cases showed partial or complete obstruction of pantopaque column in which it was difficult to differentiate from other spinal cord lesion and the lateral view of myelographic study and the radiographic changes in the plain view were helpful to differentiate.