It has been demonstrated that lesions in the flocculus and nodulus of the cerebellum reduce or abolish the ability to suppress the vestibular nystagmus. In normal subjects, caloric nystagmus is suppressed in light. Visual suppression of caloric nystagmus was studied in 55 normal subjects in order to justify the application of the procedure as a clinical test in Korean. The results are as follows ; 1) The mean visual suppressions of the vestibular nystagmus from 55 normal subjects were 62.8±14.3% at a fixation distance 50cm, 64.3±18.1% at 180cm. 2) Comparison of visual suppression with sex, with site of caloric stimulation was not statistically significant(p>0.05). 3) Frequency of caloric nystagmus was 29.0±6.8 in dark compared with 36.12±8.2 in light, the change was significant(p>0.05). 4) The mean visual suppression was 60.6±19.5% in initial test and 71.4±10.4% in repeat test. The difference between the two test was statistically significant(p>0.05).