Purpose: To evaluate the value and the radiologic findings of CT discography in the diagnosis of the farlateral disk herniation. Materials and Methods: We retrospectively reviewed 7 cases of surgically proven farlateral lumbar disc herniation. CT discography was performed for all cases. Four cases underwent conventional CTand three cases MRI as a primary diagnostic imaging method. Far lateral diac herniation was divided into 3 groupsby location; Intraforaminal herniation, extraforaminal herniation, and mixed type. We analyzed the findings of CTdiscography including location and extent of far lateral disc herniation. Results: In all 7 cases, CT discographyclearly demonstrated the filling of contrast media in laterally-protruded disc material. Intraforaminal andextraforminal types were seen in 2 cases each, and mixed type in 3 cases. Subligamentous herniated nucleuspulposus was present in 6 cases and extruded disc in 1 case. Far lateral disc herniation was located at L4-5 in 5cases and L5-S1 in 2 cases. Conclusion: CT discography can help establishing accurate preoperative diagnosis forfar lateral disc herniation.