Nasal bone and supporting cartilages existing external framework of nose are poorly defined, even in standard anatomical texts. More anatomical information about this nasal bone and supporting cartilages were required for understanding nasal plastic surgery and nasal physiology. The authors describe the shape, size and interrelation between external nose supports of 10 Korean adult cadavers. The results are followings. 1) The size of nasal bone and its relation with upper lateral cartilage(U.L.C.) are followings ; median caudocephalic length of nasal bone is 25.6mm, length of upper border of nasal bone is 5.0mm, length of lateral border of nasal bone is 28.0mm, length of lower border of nasal bone is 10.1mm and articulation of nasal bone and U.L.C. is 3.2mm. 2) The size of upper lateral cartilage(U.L.C.) and its relation with lower lateral cartilage(L.L.C.) are followings ; median caudocephalic length of U.L.C. is 14.2mm, longest length of lateral border of U.L.C. in 10.9mm, articulation length of U.L.C. and L.L.C. is 1.1mm and the common types of articulation between U.L.C. and L.L.C. are opposed scroll, overlap only and end to end. 3) The length of exposed septal cartilage is 7.8mm. 4) The most common shape of lower lateral cartilage is convex type.