This study is to consider the problems of outdoor space in hillside residential area from aging-friendly point of view. By changing an existing welfare paradigm for the aged, which regards the old as a problematic group and they are segregated(aging-in-place), aging-friendly city is based on the concept of ‘aging-in-community’, ‘livable community for age’, and ‘community for lifetime’. In this respect, outdoor space in residential area has importance as neighborhood, in case of hillside residential area it needs space regeneration for the aged because of poor surrounding and difficulty in walking. Therefore this study will be aware of the problems of outdoor space in hillside residential area for making aging-friendly city.