Abstract: Objective To investigate the dentofacial features of normal adults in Harbin area with Jarabak cephalometric analysis to set up a normal value of this analysis method in this area. Methods 56 normal adults who were born and bred in Harbin (including 30 male with average age of 22 and 26 female with average age of 21) were selected for this study. Lateral cephalometric X-rays were taken under natural head position (NHP). Computer aided methods were used for Jarabak cephalometric analysis and statistic analysis．Results The range of normal value of Jarabak analysis in Harbin area was obtained. Conclusions The results of the study show that there are no significant differences between male and female groups in angle measurements,but there are significant gender differences in the linear measurements.

Key words: normal occlusion, Jarabak analysis, cephalometric