This study explored the sandplay therapy case of a 5th grade boy who was living in a small income fatherless family from the viewpoints of both sandplay theory and related literatures. The goal of the therapy was to lessen his difficulties under the free and protected space of sandplay therapy. This study comprised 59 sessions of sandplay therapy. The subject exhibited his situations in the initial parts of therapy(1~5, the preparation for war against enemies) by putting miniatures related to Egypt and by placing Indians who were keeping the house from enemies. In the intermediate sessions(6~47, holding a ceremony), he repeated burning rituals, played finding treasures, and exhibited both struggle and construction. In the final parts(48~59, integration), he showed integration by expressing the adaptation to the collective. This study indicated the effectiveness of sandplay therapy, because his maladjustments in both school and home were reduced.