According to the increase in number of persons who have physical impediments in this country, the importance on the convenient facility for physically disabled persons is gradually being extended as well. This thesis is focused on the small scale interior design plan for the disabled persons in diminutive symptoms among several kinds of congenital or postnatal impediments. Just like the other disabled persons, the public convenient facility or special space is not required, but I have reviewed the matters to have to be improved and the present residing shape of the disabled persons under the diminutive symptoms in order to provide the interior design available for the joint uses together by and between non-handicapped and handicapped persons as such undersized persons have recently been differentiated together with handicapped persons within the small scale house space.