The purpose of this study is twofold: (a) to investigate whether a line dance (i.e., physical activity) can reduce stress, and (b) to confirm whether a line dance can prevent stress. For the present study, this study classified four conditional groups; control group, line dance group, stress-coping training group, and line dance with stress-coping training group. Before treatment, the participants in each group indicated their level of stress and subsequent factors of stress coping. After sixteen weeks, the participants in each group were also measured their level of stress and subsequent factors of stress coping. To verify the effects of line dance and stress coping training, the present study compared the change of participants' level of stress and subsequent factors of stress coping. These results are consistent with previous studies, reporting that stress coping training can reduce stress and anxiety, and enhance the competence of stress coping. The result of the present study implies that the interaction between psychological stress coping training and physical activity can decrease stress.