As the changes in social conditions which result from urbanization and decrease of childbirth, the way of thinking about how should the play and the educate environments relating infants has been changed. The semi-outdoor space in kindergarten is proposed space to play free, to have interests to the outdoor, to feel and touch the nature. The purpose of this study is to clarify the general conditions of the semi-outdoor space in kindergarten and the utilities of the space and the relations between semi-outdoor space and children’s play, based on the analysis of questionnaire survey at 106 kindergartens and observing research at 5 kindergartens. The facts finding study on semi-outdoor space in kindergarten are as follow: Every kindergarten has almost 14% (semi-outdoor space/total floor area), 60 m2per 1 semi-outdoor space. Depth of the semi-outdoor space has related with children’s play, the wider the space is the more played children are. And other elements like pet, play furniture, how many passing people are, have effected on children’s play.
