Horseradish peroxidase labeling allowed unambigious delination of the vestibular nuclei and areas of innervation by the vestibular nerve afferent fibers. The histomorphology of the vestibular nuclei was documented with the aid of camera lucida drawing. The superior vestibular nuclei(SN) originated ventromedial to the mesencephalic tract and nuclei of the trigerminal nerve. This nucleus contained medium-sized cells with a central group of large cells(30~50μm in diameter). The lateral vestibular nuclei(LN) originated 1 to 1.3mm below the rostral end of the vestibular area. It was ventrocaudal to the SN and contained many large cells with diameter of 45 to 60μm. The DN originated 2.2 to 2.5mm caudal to the beginning of the vestibular nuclei, between the caudal LN and medial vestibular nuclei(MN). Most of the cells of the descending vestibular nuclei(DN) were medium-sized with diameter of 20 to 40μm. The MN began 0.5 to 0.9mm caudal to the beginning of the vestibular nuclei adjacent to the floor of the 4th ventricle. It extended for 3 to 4mm alongside the SN, LN and DN. The MN contained the most homogenous cells which had diameters of 10 to 20μm. There were 5 minor nuclei such as interstitial nuclei, group Y, L, X(& F), and P receving vestibular innervation.