Objective To study the difference and correlation between sagittal plane parameters of cervical X-ray and CT reconstruction images of adult cervical spine. Methods 58 patients who were treated in our hospital from January 2013 to December 2015 were studied. All patients were examined by X-ray and CT examination of the cervical lateral position. Measurement parameters including Cobb C2-7 angle, Gore C2-7 angle, CCI. Results of different methods of checking parameter comparison and correlation analysis, results showed that, cervical spine X-ray measurement of the Cobb angle, Gore angle were greater than CT examination results, the difference has statistical significance (P<0.05), two ways of CCI results quite, between groups is not significant difference (P>0.05), the correlation coefficient between the two kinds of inspection methods of Cobb angle, Gore angle and CCI respectively 0.013 0.009, 0.015, the difference is significant (P<0.05). Conclusion cervical CT image reconstruction sagittal parameters and conventional radiography in comparison with significant difference, but between the two measurement results exist strong correlation, cervical spine CT to do for disease diagnosis and preoperative evaluation of important ways