It yearns to be lighthearted and innocent, expecting the wonders of tomorrow, regardless of age. This part of our nature conР tributes greatly to our ability to sense p layfulness in our lives, balancing the seriousness of adult responsibilities. There are many asРpects of child archetype. The key of the developmental tendency of these aspects, positive or negative, is the relationship between childР and mother or mother archetype. The therapeutic relationship emphasized as mother child unity, the app roaches how therap ist underР stand client’s sandp lay p rocess, and the rep resentations of child archetype within sandtray, all of these are the important aspects of childР archetype exhibition in sandp lay therapy.Р Key words: child archetype; sandp lay therapy; mother child unityР · 62 ·