This research aims to study the therapeutic effects of using Gestalt approach play therapy on elementary school child with shy behavior. The client was an elementary second-grade body, whose main problem was being alienated and bullied because of his shyness. There were twelve 40-minute therapeutic sessions, meeting once every week. The study finds that the client’s behavior did undergo considerable change both inside and outside the playing therapy room. The client felt more self-supportive by himself. The hostility toward the counselor has been changed into affection. The client developed different coping skill toward counselor and father. The expression of his body movement and emotion is more free. The client is less likely to be bullied, more willing to voice his opinion and more comfortable with his teachers. Based on the findings, suggestions are offered for future use in related fields.