This study is a case study of sandtray therapy of a child who is a school violence victim applying Klein s theory. The subject of the study is an 11-year-old girl, The sandtray therapy, course was conducted from January 16, 2017 to June 11, 2017, for a total of 18 sessions once a week for 50 minutes. The sand tray therapy process of a target child was divided into partial object and whole object, and analyzed. The paranoid-schizoid position of a partial object was classified into anxiety, projective identification and split by analyzing, and the depressive partial of the whole object was classified into guilt, ambivalence, and totality by analyzing. The child mentioned things such as Sheep are afraid of people touching them in fear of being eaten. , and Baby sheep only follows around its mom . she appears to be anxious in fear of being eaten and out of dependence on her mother. This is seen as partial object type that appeared at the beginning of the consultation. Also it has been repeatedly shown over several sessions that the child tends to split the objects by saying things like Dad always sides with my sister. Dad doesn t seem to like me much at all, and that s why I am so attached to my mom. In whole object point of view, the child showed ambivalence feeling toward her sister as in Although I don t want to do chores, I still do it to get what I want. and it can be considered as an existence of inner conflict to gain totality. In addition, the child went through transitional process over several sessions by mentioning things like Let s not just stick between two of us, and let s play with others together and A friend came over to me to show affection and ask questions. and demonstrated improvements on target integration through the restoration of relations. Therefore, this study implies that the process of sandtray therapy of the victims of school violence has made a positive change to the whole object beyond the partial object.