In normal adults, general characteristics and visual suppression on the vestibuloocular reflex(VOR) evoked by sinusoidal rotation were studied. Sinusoidal rotation of the whole body was provided by Sinusoidal rotatory chair at ±50~±80˚ and 0.1, 0.2, 0.5Hz, and the visual suppression was produced by chair fixed LED lamp in front of a subjects. By rotatory stimulation eye responses appeared, which were composed of slow and fast components, the former was the opposite direction to the whole body rotation and the latter the same direction to the rotation. Direction of nystagmus was reversed by changing the direction of stimulation, also slow component velocity of nystagmus was increased by increasing stimulus velocity. Frequency of gross eye movement was accord with stimulus frequency but the direction was opposite each other. Visual suppression of the VOR decreased the frequency and velocity of nystagmus significantly. The amount of slow component velocity was increased at lower frequencies. These results indicate that the VOR is suppressed by visual stimulation, and the effect of suppression is increased at lower stimulus velocities and decreased at higher stimulus velocities.