The author analyzed 51 Korean male adults and 53 female adults with normal occlusion roentgenocephalometrically and following conclusions were obtained. 1. The angle between the Camper line and the maxillary occlusal line was $-6.22^{circ}$ in male and $-4.76^{circ}$ in female. There was not a considerable difference between male and female. 2. The angle formed by the Camper line and the Frankfort Horizontal line was $18.01^{circ}$ in male and $17.3^{circ}$ in female. Not a significant difference was found in both sexes. 3. The angles of NSL-$OL_s$, NSL-FH and $OL_s$-FH showed no considerable differences in both sexes.