In this dissertation we will discuss the children s inability to play observed in a clinic. Through Winnicott s work, we can reflect on the importance of playing for psychoanalysis and its relevance to healthy primitive emotional development. Parallel Wilfred Bion s work, we point out the similarities between thinking and playing as pre-symbolic capacities, developed from the relation with the environment in the beginnings of life, mainly by the functions denominated holding and rêverie. The importance of the analyst s place facing difficulties in the formation of the transitional space, from a sufficiently good analyst posture.