Child care facility is the place that the infants and parents spend in the same space, so the consideration of exclusive space reservation for babies less than twelve months old, and corner setting according to age stage, etc. is required. In this paper, firstly, the relation between floor fitting and installation mode of corner is regulated for childcare facilities that building form and area differ. Secondly, parent and child's behavioral patterns are explained based on the investigation of utilization with two types of floor fitting and corner arrang ement, and the function of space composition and corner setting is considered.