Objective : As this is a quasi-experimental study by the post-test design for a nonequivalent control group, it was attempted to verify the effect of massage using aroma oil on whether or not the normal vaginal delivery of primiparous mothers. Methods : As for the experimental treatment, it applied the aroma oil massage to the experiment group when the cervical dilatation was $4{sim}5cm$, and as for the data analysis, it conducted the significance test using the program of SPSS 12K for Windows, with Chi-square test $(X^2)$ and t-test. Results : The experiment group that carried out the aroma massage therapy, was high in the cases of normal vaginal delivery(P<0.05), compared to the control group that did not carry out the aroma massage therapy. Conclusion : The experiment group, which received the aroma massage therapy, had significant difference in the cases of normal vaginal delivery, compared to the control group that did not receive the aroma therapy, thus the aroma massage therapy is thought to be a nursing-intervention plan, which can be usefully applied as to the primiparous mothers aiming at normal vaginal delivery.