In this paper, it is aimed to clarify the character of “inner void block” as a fragmental urban morphology by viewing from spatial compositions and genealogical records. In the first part, the distribution of the inner void block around the residential area in Tokyo is examined by observing the house detailed map. In the second part, the spatial composition of the inner void block is examined by field survey, and the genealogical record of inner void block is examined by observing the land use and its peripheral arrangement of houses in the block in the old maps. In the final part, the typology of the innner void block is led by the relationship between the spatial composition and the genealogical record of block. As a result, the structured characteristics of the inner void block is clarified through the comparison between types.
