This study was designed to see if the auditory stimulation with metronomic beat were effective in reducing social anxiety. 22 high social anxiety group and 20 low social anxiety groups were selected. 11 assigned test/high social anxiety group, 11 assigned control/high social anxiety group, 10 assigned test/low social anxiety group, 10 assigned control/low social anxiety group. After using the structured anxiety induction task, TSST-G, a 30-bpm metronomic stimulation was given to the test group only for 5 minutes. To measure physiological symptoms, the heart rate was measured every second of the experiment from beginning to the end of the experiment, and the heart rate average was calculated for each section of the task. In addition, anxiety, tension, and avoidance were rated at 100 out of every section interval, and post-event rumination were measured in three sections(after mental arithmetic, stimulation/resting, debriefing). As a result of repeated measures analysis of covariance for the heart rate average, the heart rate of the test group was found to be stable at a statistically significant level, and this effect was significant only in the low anxiety group. Also, the longer the subjects listened to the metronomic beat, the effect was clearer. At this time, the baseline of the heart rate and the speech anxiety scale performed in the pre-evaluation were set as covariate. In conclusion, this study is significant in that it can reduce social anxiety using non-invasive and easily available stimuli.