Facial Electroneuronography(ENoG) is known to be the reliable electrophysiologic measurement which provide the advantages in determining the prognosis or surgical indication in acute facial paralysis patients. However, it's also known that the results of ENoG are quite sensitive to the patient and instrument specific factors. This study, therefore, was aimed to establish the normal range of the measured data and to standardize the test procedures for the accurate clinical applications. The authors performed ENoG in 50 healthy subjects and the following results were obtained. 1) The threshold amplitude of the stimulating currents is 6.6±3.6 mA in left and 6.0±3.3 mA in right side, and the amplitude of the supramaximal stimulation is 41±7.8 mA in left and 38±9.3 mA in right side, both of which show no significant differences between left and right side of the face(paired t-test, p>0.05). 2) The amplitude of the compound action potential is 2.33±0.84 mV in left and 2.35±1.07 mV in right side, and the latency time is 2.55±0.89 msec in left and 2.49±0.89 msec in right side, and the temporal dispersion is 0.62±0.31 V/Amp in left and 0.62±0.31 V/Amp in right side, all of which show no significant differences between left and right side of the face(paired t-test, p>0.05). 3) The average of the interside variance is 17.57% with the standard deviation of 11.14%. 4) The average of the test-retest variability is 14.7%. 5) The comparisons of amplitude, latency and temporal dispersion of the compound action potential do not show signigicant differences between male an female groups(t-test, p>0.05). 6) The comparisons of amplitude, latency and temporal dispersion of the compound action potential do not show signigicant differences among the age groups(oneway ANOVA, p>0.05). 7) The analysis of threshold, supramaximal stimulation, and amplitude, latency and temporal dispersion of the compound action potential do not show signigicant correlations with skin impedance below the 10kilo-ohm except for the supramaximal stimulation(r=-.2725, p<0.01).