The present study aims to divide Louise Bourgeois’ art-work process into 4 process based on Enright’s forgiveness process, and analyze the task and psychology of forgiveness in each phase of forgiveness in line with varying media and themes in her works of art. The research methodology of content analysis was applied to Louise Bourgeois’ works of art from 1930's, when she began her career as an artist, to 2010 right before her death. Louise Bourgeois’ works are subdivided into the uncovering phase to expose the source of anger; the decision phase to express the feeling of anger and aggression and to discover the inappropriateness of her ways of dealing with anger; the work phase to understand and sympathize with the person who hurt her; and the deepening phase to reveal forgiveness and reconciliation. In each phase, performance of the task of forgiveness is related to the changes in themes and media as follows. In the uncovering phase, she uses highly restricted media such as pens and prints to represent the feeling of anxiety and anger based on ‘house=woman’ as the source of anger. In the decision phase, under themes of Lair, sex and body, double-sidedness, she uses woods, latex and objets circularly to admit the ineffectiveness of expressing the feeling of anger and aggression and to show a new change in insight. In the work phase, under the themes of rooms and cell's series, spiders and couples, she uses needleworks for strong healing effects leading to recovery, restoration, sympathy and understanding of the person who commits faults, and acceptance of distress. In the deepening phase, under the themes of forgiveness and flowers, she delivers a gentle feeling using painting media such as watercolors characterized by being highly acceptive, and reaches increasing positive feeling and internal liberation as part of her forgiveness work. Overall, Louise Bourgeois’ world of art implies the process of dealing with anger, that is, the process of forgiveness, and reflects the psychology of forgiveness. This study suggests the rationale for the practice of forgiveness art therapy to provide appropriate themes and art media as well as for the art therapy intervention for forgiveness applicable to clients who experience anger in interpersonal relations and need forgiveness.