Purpose: Purpose of this study was to examine the impact of group dynamic imagery therapy on job stress and psychosocial stress of female nurses. Methods: The research questions were tested through a quasi-experimental research with a non-equivalent pretest-posttest design. Seventy-seven female nurses from G University Hospital in J City participated in this study; 38 of them were assigned to the experimental group, and the rest were assigned to the control group. Once a week for 8 continuous weeks, participants in the experimental group had 90-minute group dynamic imagery therapies. Results: 1) The level of job stress was significantly lower in the experimental group than the control group, and 2) The level of Psychosocial stress was also significantly lower in the experimental group than the control group. Conclusion: The results of the study indicate that group dynamic imagery therapy can be an effective intervention against job stress and psychosocial stress of female nurses.