"This thesis is to examine out the effect of the self-psychological art therapy on the reduction of problem behaviors and the improvement of self-esteem of the man with narcissistic personality disorder. The object of study is 45-year-old man with narcissistic personality disorder who lives in G city. He took part in the self-psychological art therapy program, which was held in two steps. For the analysis of the research tools and results, self-esteem scale test was carried out, and specific changes in his behaviors and attitudes of narcissistic personality were observed and measured before and after the first step therapy, and after the second step therapy. The results of this study are as follows. Firstly, the points of the specific changes in the behaviors and attitudes of ten items on the interpersonal relationship and the sexual problem behaviors were analyzed in order to find out whether the self-psychological art therapy reduces the problem behaviors of the client. It was shown that the problem behaviors of the interpersonal relationship had been reduced eminently, and the sexual problem behavior, voyeurism had been removed completely since the ninth session of the first step art therapy. Secondly, the points of the self-esteem scale test were analyzed in order to find out whether the psychological art therapy improves the self-esteem of the client. It was shown that his self-esteem had been improved, and especially the points of the negative items had been improved eminently. Judging from the results above, it is certain that the self-psychological art therapy is effective on the reduction of problem behaviors and the improvement of self-esteem of the man with narcissistic personality disorder. Key Words : Narcissistic Personality Disorder, Self-Psychology, Self-Object, Problem Behavior, Self-Esteem."