Galvanic nystagmus in the rabbits was observed eliciting by electrical stimulation through biaural-bipolar electrodes in the external acoustic canals. The threshold of nystagmus was calculated and its direction of nystagmus was observed. The results were as follows: 1. Threshold for eliciting nystagmus by 100 volts stimulation was 3.48 mA in average on both polarity. 2. Threshold by 50 volts stimulation was 2.4 mA in average. 3. Threshold by 10 volts stimulation was 2.3 mA in average. 4. Direction of nystagmus elicited was toward the cathodal side, however not always.