This study examines the process of intimacy formation between two 3 -year-old children. It examines observational data, focusing on "spontaneity", "equality", and "reciprocity", which are factors in the developmental characteristics of 3 -year-olds and are needed to form intimacy in 3 -year-olds. The results show : (1)intimacy is formed through interaction based on equality in spontaneous relationships ; (2)intimacy deepens through play and reciprocal help ; (3)when intimacy faces a breakup crisis arising from conflict during play, other children assist with maintaining intimacy ; and(4)the assistance helps to extend peer relationships. Therefore, teachers must support the formation of intimacy through play, including a group -level view.
