The aim of this study is to investigate the effect of bergamot essential oil or music on releasing stress by using Swedish massage. Furthermore, to observe if the bergamot essential oil and music has synergistic effect on the releasing stress of human. The research used physiological parameters, heart rate variability(HRV) parameters , and electroencephalogram (EEG) signal as stress indicators. Before the experiment, we used physiological monitor to measure the subject's physiological parameters such as systolic blood pressure, diastolic blood pressure, heart rate and pressure index (PSI), HRV analyzer to measure the subject's HRV parameters, such as low frequency power, high-frequency power, normalized low-frequency power, normalized high-frequency power and low / high-frequency power ratio and EEG device to measure the subject's EEG signal, such as 鯂, 鮻鼦鯋wave, meditation and attention parameters. The objects are divided into control group and experimental groups of 3% bergamot essential oil, music and 3% bergamot essential oil plus music. After massaging for 50 minutes, we measured the objects' physiological parameters, HRV parameters and EEG signal again. One way analysis of variance (one way ANOVA) was used to compare the differences of physiological parameters, HRV parameters and EEG signal between pretest and posttest in the groups of 3% bergamot essential oil, music and 3% bergamot essential oil plus music and the control group. In addition, t-test is used to compare 3% bergamot essential oil plus music with 3 % bergamot essential oil. Thus, the differences of physiological parameters and HRV parameters between pretest and posttest can be observed if the 3% bergamot essential oil plus music has synergistic effect. The experimental results showed that no matter using bergamot essential oil and bergamot essential oil plus music to compare with control group, there were obvious decreases in physiological parameters such as systolic blood pressure, diastolic blood pressure, heart rate, PSI, and HRV parameters such as low-frequency power, normalized low-frequency power, and low/ high frequency power ratio, and significant increase in high-frequency power, normalized high-frequency. But in he music group, there were only decreases in low-frequency power, and low/high frequency power ratio. In the electroencephalogram (EEG) signal, the experimental group all can induce an increase in power 鯂 wave, and meditation parameters when compared with control group. However, comparing the 3% bergamot essential oil plus music with 3% bergamot essential oil, there was no significant difference in physiological parameters, HRV parameters , and EEG signal. It means that there’s no good synergistic effect for releasing stress when the bergamot essential oil and music l acted together. This study is the first confirmed that Swedish massage with bergamot essential oil or music may act through decreasing sympathetic activity, increasing parasympathetic activity or increasing 鯂 wave to cause a relief of stress on human.