The problem of this study was an analysis of the process of play therapy. The purposes of this study were (1) to describe the patterns of play activity, nonverbal expression, and verbal expression during the process of play therapy over fifteen sessions; (2) to compare the patterns of play activity, nonverbal expression, and verbal expression of boys and girls during play therapy; and (3) to verify the processes of play activity, nonverbal expression, and verbal expression during extended play therapy.