This study is intended to look into the effects of aromatherapy on stress. To achieve this, it collected at the effects of aromatherapy about stress based on the several accumulating quantitative and qualitative research related to verifying the effectiveness of aromatherapy, and that applied a meta-analysis to calculate the analysis results. The focus of this study was master's and doctoral papers released in Korea from 2004 to 2015. Of these papers, there was a final selection of 12 papers that had identified the effects of stress by conducting experimental aromatherapy treatments with an experimental group and a control group, and had clearly specified statistical figures (mean, standard deviation) for calculating the effect size. Though different results among these studies were produced, the statistical methods of meta analysis, which can indicate the integrated results of high statistical power without being biased toward the results of only some studies, were used to examine the collected data. The effect size and the integrated effect size of individual research for the finally selected 12 papers by dependent variables showed that there were 8 papers concerning stress, 5 concerning psychological stress, 5 concerning physical stress, and 3 about state anxiety. In addition, a meta analysis showed that aromatherapy had significant effects for the management of psychological stress, physical stress, and state anxiety. This suggests that the prevention of various stress diseases and the reduction of stress in everyday life must find ways to use aromatherapy as management therapy. The various programs look likely to be used in the esthetic field by integrating aromatherapy and massage with modern individuals who prefer naturopathy due to side effects of drug toxicity in terms of cosmetology.