The Purpose of the present research was to examine the effectiveness of sandplay therapy on reducing the symptoms of oppositional defiant disorder . The study population consisted of all children 7 to 9 years with ODD from Omid Asr Rehabilitationat 2015.  Sampling method was purposeful and 24 children with ODD that have selected (12 children experimental group and 12 control group). This is a quasi– experimental study with a pretest /post-test experimental and control group. In this study to experimental group sandplay theray administered in 10 sessions and the control group not received treatment in this field. Instrument for the diagnosis of oppositional defiant disorder was CSI.4 questionnaire were used. Results showed that sandplay therapy were effective in reducing symptoms of oppositional defiant disorder . Then, sandplay therapy is a useful intervention for reduction of symptoms of oppositional defiant disorder.