The personality of little boy in Araby is examined and interpreted from the perspective of “eternal boy” archetype, hero archetype and independent personality formation in Jung’s psychology. Compared with Adonis in ancient Greek myth, “eternal boy” archetype is demonstrated in the personality of little boy, the former penetrated “eternal boy” archetype into the whole personality and so failed, the latter avoided being eroded, so independent personality was set up and “eternal boy” was successfully transited into the first period of hero archetype. The protagonist in A Portrait of the Artist as a Young Man further verified that little boy realized the second period of hero archetype, thus, the robust and independent personality makes little boy smash the disheartened image of a vagrant displayed by ancestors.