A college student who exhibited several post traumatic stress disorder (PTSD) symptoms was used as a case study in order to investigate the therapeutic effects of sandplay therapy for PTSD sufferers. In total, 27 sessions of the sandplay treatment program were used to conduct psychological tests before and after the sessions. Any changes in the manner of expressions on the sand box during the treatment, and the results of pre and post psychological tests on aspects of depression, anxiety and interrelationships were analyzed. Overall results showed that the subject exhibited progressive behavioral improvement and signs of recovery. Psychological tests revealed reduced levels of depression and anxiety, and improved interrelationship scores. In conclusion, sandplay therapy does exhibit positive benefits as an effective treatment modality for PTSD in adolescents and young adults.