Purpose : The purpose of this study is to explore the effects of imago psychotherapy on Self-concept of Nursing students. Method : The period of this research was from September 1, 2001 to December 1, 2001. The subjects were 10 sophomore nursing students in T college located in Taegu City. The research design was a one - group pretest - posttest design and the theoretical framework was psychodynamic theory. Collected data were analyzed by paired t-test with SPSS program. Results : The results of this research were as follows: There was significant difference in self - concept score in problem solving, interpersonal relationship ability and total self - concept between before and after treatment. Conclusion : I would like to make following suggestions with the results of this study. *The number of the session of Imago psychotherapy should be at least 20 and then the effect of the therapy can be properly verified. *With repeated studies, we explore the effects of treatment and should be done follow up test for the maintenance of effect. *We need to develop various Imago psychotherapy program to improve mental health and self-concept of nursing students.