Objective        To investigate the craniomaxillary characteristics of Han’s and Tujia’s youths with normal occlusion in Chongqing by Delaire cephalometric analysis.        Methods        A total of 153 health youths (18 to 26 years old) with normal occlusion (Han: 37 males and 41 females;Tujia: 36 males and 39 females) were enrolled in this study. The lateral cephalogram of each persons were traced

digitized

and measured. Their cephalometric values were obtained and compared.        Results       Compared with the female

mental region of the male is relatively retrusion

and their mandibular angle and plane were relatively clockwise rotation. Besides

there was no significant difference in the structural characteristics of craniofacial skull data between male and female with normal occlusion in Chongqing. There were significant differences of craniofacial skull data between Han’s and Tujia’s youth (P0.05). Glenoid fossa of Han nationality was nearer to the base of skull. The length of anteroposterior axes of Tujia was relatively longer.        Conclusion        There is no significant difference between the sexes and between Han’s and Tujia’s youths. Compared with that of Han

Tujia’s facial profile is relatively upright.