This study intended to change the environment of a classroom in the existing child care center by applying the home environmental characteristics. The progress of environmental improvement for this study was conducted throughout the three stages. First, analyze the problems of existing child care center, which reflect the environmental characteristics and user opinions of the environment. Second, based on the analysis of the problems of the existing classroom, the classroom is improved by applying the environmental characteristics of the home. Third, compare the effect of improving the environmental characteristics of the home. The results of the study are as follows. First, the classroom was surveyed with a long rectangular space structure and was examined as a wide area when compared with the legal standards of 4.32 m 2 per child. Second, the emphasis is to complement the defects of the spatial structure and seek changes to the comfort environment, such as the proper stimuli and alterations to the atmosphere. Third, the effectiveness of the environmental improvement was assessed by comparing the results before and after the improvement of the environment. In terms of child environmental demands, movement and movement have increased. integrated configurations of the activity areas showed increased functionality, and overall, it was evaluated as a whole in terms of the atmosphere and the placeness.