This study is concerned with the functions of dwelling space effected by the tendency that the number of furniture in the household has increased in recent years. The functions of dwelling space were grasped on the basis of dwelling - behavior tenitories. The possession of furniture was surveyed In 144 units of apartment house. Observation with questionnaire was carried out through pilot and main survey. 1) The dwelling - behavior territories of Anbang, Living Room and D.K. each were classified into 4 kinds. These territories were assorted into two categories ; first, the similar territories were integrated and specific various territories formatted, second, new kind dwelling spaces were required2) Accordingly, Anbang have to be re - setted up Anbang and storage, Living Room and D.K. re - setted up L.D.K. and Utility. In this way, it coudld be possible, that creative reasonable space were formated for more satisfactory. Therefore relationships between furniture possession and the usage of dwelling spaces wre identified.