In this study, we tried to extract children's view of interior space through modeling of a room. As a result, the investigation revealed the fact that children understand interior space gradually from nearby things to the whole room. There is a sex difference in the view of interior that girls understand practically, while boys do fancifully. On the whole, the first-year students of an elementary school don't know how to understand interior, the second years begins to be interested in color and figures and the third and forth years in patterns. And in the third and forth years students deepen their understanding of ceiling, in the fifth they get to think much of the formation of windows and in the junior high school days, the three-dimensional understanding of space is though to be almost completed
